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  • Exchange 2010 to Exchange 2010 Public Folder Replication

    - by Archit Baweja
    We have 2 exchange servers in our org. MX1 and MX2. I'm trying to replicate all MX1 public folders to MX2. I've setup replication for all the toplevel folders to include the MX2 server. However no public folders are being replicated. The event log does not show any errors. I've set the diagnostic level for all public folder diagnostics to Highest using get-eventloglevel "MSExchangeIS\9001 Public\*" | set-eventloglevel -Level Expert However besides a 3092 event ID (type: 0x2) generated on MX1 (the source server), there are no events being generated that would notify me of any issues. Some technical details. MX1 is Windows 2008 Standard, MX2 is Windows 2008 Enterprise (eval mode right now).

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  • How do I determine if my controller is in IDE or AHCI mode in Linux?

    - by philcolbourn
    I have an old MacBook Pro 4,1 (early 2008) - but I suspect an answer would apply to many MacBook Pros. It has an Intel IDE/SATA controller (ICH8M/ICH8M-E). I have installed a patched MBR that is supposed to put my controller into AHCI mode. It does this by setting some controller port value that I don't understand. This seems to work as I get this from lspci: 00:1f.1 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03) 00:1f.2 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode] (rev 03) Now most, perhaps all, sites that provide a solution (enabling AHCI) suggest that after a sleep/wake cycle that a controller will revert to IDE mode due to how Apple support Windows. They recommend disabling sleep. From author of patchedcode.bin I think Enabling AHCI for Windows on MacBooks NB: I do not have bootcamp installed and I do not have Windows installed. Is there a way to prove that my controller is in IDE or AHCI mode? Background Data Using patchedcode.bin MBR I get this in syslog: Jun 12 22:33:22 max kernel: [ 1.860955] ahci 0000:00:1f.2: version 3.0 Jun 12 22:33:22 max kernel: [ 1.861052] ahci 0000:00:1f.2: irq 45 for MSI/MSI-X Jun 12 22:33:22 max kernel: [ 1.861117] ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 3 ports 1.5 Gbps 0x1 impl SATA mode Jun 12 22:33:22 max kernel: [ 1.861120] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pio slum part ccc ems Jun 12 22:33:22 max kernel: [ 1.861130] ahci 0000:00:1f.2: setting latency timer to 64 Jun 12 22:33:22 max kernel: [ 1.880880] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) Jun 12 22:33:22 max kernel: [ 1.880983] scsi2 : ahci Jun 12 22:33:22 max kernel: [ 1.884552] scsi3 : ahci Jun 12 22:33:22 max kernel: [ 1.886932] scsi4 : ahci Jun 12 22:33:22 max kernel: [ 1.886998] ata3: SATA max UDMA/133 abar m2048@0xdb504000 port 0xdb504100 irq 45 Jun 12 22:33:22 max kernel: [ 1.887000] ata4: DUMMY Jun 12 22:33:22 max kernel: [ 1.887002] ata5: DUMMY Jun 12 22:33:22 max kernel: [ 2.204103] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jun 12 22:33:22 max kernel: [ 2.204656] ata3.00: ATA-8: FUJITSU MHY2200BH, 0081000D, max UDMA/100 Jun 12 22:33:22 max kernel: [ 2.204662] ata3.00: 390721968 sectors, multi 16: LBA48 NCQ (depth 31/32), AA Jun 12 22:33:22 max kernel: [ 2.205324] ata3.00: configured for UDMA/100 Jun 12 22:33:22 max kernel: [ 2.205554] scsi 2:0:0:0: Direct-Access ATA FUJITSU MHY2200B 0081 PQ: 0 ANSI: 5 Using my original MBR I get this from syslog: Jun 13 18:07:13 max kernel: [ 0.622861] ata_piix 0000:00:1f.1: version 2.13 Jun 13 18:07:13 max kernel: [ 0.622869] ata_piix 0000:00:1f.1: power state changed by ACPI to D0 Jun 13 18:07:13 max kernel: [ 0.622924] ata_piix 0000:00:1f.1: setting latency timer to 64 Jun 13 18:07:13 max kernel: [ 0.623339] scsi0 : ata_piix Jun 13 18:07:13 max kernel: [ 0.623730] scsi1 : ata_piix Jun 13 18:07:13 max kernel: [ 0.623765] ata1: PATA max UDMA/100 cmd 0x8108 ctl 0x811c bmdma 0x80e0 irq 21 Jun 13 18:07:13 max kernel: [ 0.623767] ata2: PATA max UDMA/100 cmd 0x8100 ctl 0x8118 bmdma 0x80e8 irq 21 Jun 13 18:07:13 max kernel: [ 0.623810] ata_piix 0000:00:1f.2: MAP [ Jun 13 18:07:13 max kernel: [ 0.623811] P0 -- -- -- ] Jun 13 18:07:13 max kernel: [ 0.623866] ata_piix 0000:00:1f.2: setting latency timer to 64 Jun 13 18:07:13 max kernel: [ 0.624241] scsi2 : ata_piix Jun 13 18:07:13 max kernel: [ 0.624558] scsi3 : ata_piix Jun 13 18:07:13 max kernel: [ 0.624862] ata3: SATA max UDMA/133 cmd 0x80f8 ctl 0x8114 bmdma 0x8020 irq 18 Jun 13 18:07:13 max kernel: [ 0.624865] ata4: SATA max UDMA/133 cmd 0x80f0 ctl 0x8110 bmdma 0x8028 irq 18 Jun 13 18:07:13 max kernel: [ 1.208879] ata3.00: ATA-8: FUJITSU MHY2200BH, 0081000D, max UDMA/100 Jun 13 18:07:13 max kernel: [ 1.208882] ata3.00: 390721968 sectors, multi 16: LBA48 NCQ (depth 0/32) Jun 13 18:07:13 max kernel: [ 1.208961] ata1.01: ATAPI: MATSHITA DVD+/-RW UJ-867S, 1.00, max UDMA/33 Jun 13 18:07:13 max kernel: [ 1.216186] ata3.00: configured for UDMA/100 Jun 13 18:07:13 max kernel: [ 1.224396] ata1.01: configured for UDMA/33

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  • Linux Software RAID recovery

    - by Zoredache
    I am seeing a discrepancy between the output of mdadm --detail and mdadm --examine, and I don't understand why. This output mdadm --detail /dev/md2 /dev/md2: Version : 0.90 Creation Time : Wed Mar 14 18:20:52 2012 Raid Level : raid10 Array Size : 3662760640 (3493.08 GiB 3750.67 GB) Used Dev Size : 1465104256 (1397.23 GiB 1500.27 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 2 Persistence : Superblock is persistent Seems to contradict this. (the same for every disk in the array) mdadm --examine /dev/sdc2 /dev/sdc2: Magic : a92b4efc Version : 0.90.00 UUID : 1f54d708:60227dd6:163c2a05:89fa2e07 (local to host) Creation Time : Wed Mar 14 18:20:52 2012 Raid Level : raid10 Used Dev Size : 1465104320 (1397.23 GiB 1500.27 GB) Array Size : 2930208640 (2794.46 GiB 3000.53 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 2 The array was created like this. mdadm -v --create /dev/md2 \ --level=raid10 --layout=o2 --raid-devices=5 \ --chunk=64 --metadata=0.90 \ /dev/sdg2 /dev/sdf2 /dev/sde2 /dev/sdd2 /dev/sdc2 Each of the 5 individual drives have partitions like this. Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00057754 Device Boot Start End Blocks Id System /dev/sdc1 2048 34815 16384 83 Linux /dev/sdc2 34816 2930243583 1465104384 fd Linux raid autodetect Backstory So the SATA controller failed in a box I provide some support for. The failure was a ugly and so individual drives fell out of the array a little at a time. While there are backups, we the are not really done as frequently as we really need. There is some data that I am trying to recover if I can. I got additional hardware and I was able to access the drives again. The drives appear to be fine, and I can get the array and filesystem active and mounted (using read-only mode). I am able to access some data on the filesystem and have been copying that off, but I am seeing lots of errors when I try to copy the most recent data. When I am trying to access that most recent data I am getting errors like below which makes me think that the array size discrepancy may be the problem. Mar 14 18:26:04 server kernel: [351588.196299] dm-7: rw=0, want=6619839616, limit=6442450944 Mar 14 18:26:04 server kernel: [351588.196309] attempt to access beyond end of device Mar 14 18:26:04 server kernel: [351588.196313] dm-7: rw=0, want=6619839616, limit=6442450944 Mar 14 18:26:04 server kernel: [351588.199260] attempt to access beyond end of device Mar 14 18:26:04 server kernel: [351588.199264] dm-7: rw=0, want=20647626304, limit=6442450944 Mar 14 18:26:04 server kernel: [351588.202446] attempt to access beyond end of device Mar 14 18:26:04 server kernel: [351588.202450] dm-7: rw=0, want=19973212288, limit=6442450944 Mar 14 18:26:04 server kernel: [351588.205516] attempt to access beyond end of device Mar 14 18:26:04 server kernel: [351588.205520] dm-7: rw=0, want=8009695096, limit=6442450944

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  • Internet Explorer 10 (Metro App) on Windows 8 Pro (RTM) crash

    - by ferpaz
    Internet Explorer 10 (Metro App) on Windows 8 Pro (RTM) does not start and crash with this error: Log Name: Application Source: Application Error Date: 27/08/2012 19:21:29 Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: DELL-OPE3.red.aseinfo.com.sv Description: Faulting application name: iexplore.exe, version: 10.0.9200.16384, time stamp: 0x50107ebe Faulting module name: iertutil.dll, version: 10.0.9200.16384, time stamp: 0x50109c90 Exception code: 0xc0000005 Fault offset: 0x0000000000172f0b Faulting process id: 0xadc Faulting application start time: 0x01cd84bb737cfa16 Faulting application path: C:\Program Files\Internet Explorer\iexplore.exe Faulting module path: C:\WINDOWS\system32\iertutil.dll Report Id: b1597df3-f0ae-11e1-be78-88532e15da73 Faulting package full name: Faulting package-relative application ID: Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-08-28T01:21:29.000000000Z" /> <EventRecordID>7612</EventRecordID> <Channel>Application</Channel> <Computer>DELL-OPE3.red.aseinfo.com.sv</Computer> <Security /> </System> <EventData> <Data>iexplore.exe</Data> <Data>10.0.9200.16384</Data> <Data>50107ebe</Data> <Data>iertutil.dll</Data> <Data>10.0.9200.16384</Data> <Data>50109c90</Data> <Data>c0000005</Data> <Data>0000000000172f0b</Data> <Data>adc</Data> <Data>01cd84bb737cfa16</Data> <Data>C:\Program Files\Internet Explorer\iexplore.exe</Data> <Data>C:\WINDOWS\system32\iertutil.dll</Data> <Data>b1597df3-f0ae-11e1-be78-88532e15da73</Data> <Data> </Data> <Data> </Data> </EventData> </Event> Any suggestions?

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  • List files with last access date in linux

    - by kayaker243
    I'd like to clean up a server that my webmaster let turn into a mess. I know how to list all files not accessed within the last x days using find and -atime, but what I'm looking for is to come up with a listing of the last access date for files one level down in directory /foo: /foo/bar1.txt Dec 11, 2001 /foo/bar2.txt Nov 12, 2008 /foo/bar3.txt Jan 12, 2004 For folders one level down in directory /foo, list the date of the most recently accessed file within the directory (no limit on depth for identifying last access date) /foo/bar1/ Feb 13, 2012 /foo/bar2/ Oct 11, 2008 Where /foo/bar1/ has a file modified Jan 1, 1998 and Feb 13, 2012 and /foo/bar2/ has 30 files, most recent of which was accessed Oct 11, 2008. This question is similar to: http://stackoverflow.com/questions/5566310/how-to-recursively-find-and-list-the-latest-modified-files-in-a-directory-with-s but rather than the modification date, the date of interest is the last accessed date.

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  • Recovering database files from a corrupted VHD

    - by Apocalypse9
    We have a SQL server hosted on a virtual machine. Our hosting company updated/restarted the server and for some reason the virtual machines became unbootable. We've spoken to Microsoft and used a few higher level tools to attempt to recover the virtual machines but were unsuccessful. In browsing the file system the database folder doesn't even appear. I'm wondering if there are any lower level tools that might be able to find and copy the database files. As far as I know the physical hard drive is ok, so I'm hoping there may be some way to recover the files themselves even if the rest of the virtual machine file-system is a loss. Obviously we're in a bit of a bind, and any help/ suggestions are very much appreciated.

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  • win2008 r2 IIS7.5 - setting up a custom user for an application pool, and trust issues

    - by Ken Egozi
    Scenario: blank win2008 r2 install the goal was to have a couple of sites running with isolated pool and dedicated users A new folder for a new website - c:\web\siteA\wwwroot, with the app (asp.net) deployed there in the /bin folder created a user named "appuser" and added it to the IIS_USERS group gave the website folder read and execute permissions for IIS_USERS and the appuser created the IIS site. set the app=pool identity to the appuser now I'm getting YSOD telling me that the trust-level is too low - SecurityException: That assembly does not allow partially trusted callers Added <trust level="Full" /> on the web-config, did not help changing the app-pool user to Administrator makes the site run Setting "anonymous user identity" to either IUSR or the app pool identity makes no difference any idea? is there a "step by step" howto guide for setting up users for isolated app pools on IIS7.5?

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  • DNS server not functioning correctly

    - by Shamit Shrestha
    I have setup a DNS server which isnt working properly. My domain is accswift.com which has glued to two name servers ns1.accswift.com and ns2.accswift.com for the same IP address - 203.78.164.18. On domain end everything should be fine. Please check -http://www.intodns.com/accswift.com I am sure its the problem with the linux server. Can anyone help me find where the problem is for me? Below is the settings that I have in the server. ====================== DIG [root@accswift ~]# dig accswift.com ; << DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6 << accswift.com ;; global options: +cmd ;; Got answer: ;; -HEADER<<- opcode: QUERY, status: NOERROR, id: 11275 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;accswift.com. IN A ;; ANSWER SECTION: accswift.com. 38400 IN A 203.78.164.18 ;; AUTHORITY SECTION: accswift.com. 38400 IN NS ns1.accswift.com. accswift.com. 38400 IN NS ns2.accswift.com. ;; ADDITIONAL SECTION: ns1.accswift.com. 38400 IN A 203.78.164.18 ns2.accswift.com. 38400 IN A 203.78.164.18 ;; Query time: 1 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed Nov 6 20:12:16 2013 ;; MSG SIZE rcvd: 114 ============== IP Tables settings vi /etc/sysconfig/iptables *filter :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A FORWARD -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A FORWARD -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A OUTPUT -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A INPUT -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A INPUT -p udp -m udp --sport 53 -j ACCEPT -A OUTPUT -p udp -m udp --dport 53 -j ACCEPT COMMIT Completed on Fri Sep 20 04:20:33 2013 Generated by webmin *mangle :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT Completed Generated by webmin *nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT ====DNS settings vi /var/named/accswift.com.host $ttl 38400 @ IN SOA ns1.accswift.com. root.ns1.accswift.com. ( 1382936091 10800 3600 604800 38400 ) @ IN NS ns1.accswift.com. @ IN NS ns2.accswift.com. accswift.com. IN A 203.78.164.18 accswift.com. IN NS ns1.accswift.com. www.accswift.com. IN A 203.78.164.18 ftp.accswift.com. IN A 203.78.164.18 m.accswift.com. IN A 203.78.164.18 ns1 IN A 203.78.164.18 ns2 IN A 203.78.164.18 localhost.accswift.com. IN A 127.0.0.1 webmail.accswift.com. IN A 203.78.164.18 admin.accswift.com. IN A 203.78.164.18 mail.accswift.com. IN A 203.78.164.18 accswift.com. IN MX 5 mail.accswift.com. ====Named.conf vi /etc/named.conf options { listen-on port 53 { 127.0.0.1; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { any; }; recursion yes; allow-recursion { localhost; 192.168.2.0/24; }; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; forward first; forwarders {192.168.1.1;}; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; zone "accswift.com" { type master; file "/var/named/accswift.com.hosts"; allow-transfer { 127.0.0.1; localnets; 208.73.211.69; }; }; zone "ns1.accswift.com" { type master; file "/var/named/ns1.accswift.com.hosts"; }; ==================================== Can anybody find any flaw in this? I am still unable to reach accswift.com from any other ISP. But it is browsable from the same network though. Thanks in advance.

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  • How to know my wireless card has injection enabled?

    - by shrimpy
    I am playing around with aircrack. And was trying to see whether my wireless card on my laptop can pass the injection test And I end up seeing the following... does it mean my wireless card is not able to run aircrack? root@myubuntu:/home/myubuntu# iwconfig lo no wireless extensions. eth0 no wireless extensions. eth1 IEEE 802.11bg ESSID:"" Nickname:"" Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated Bit Rate:54 Mb/s Tx-Power:24 dBm Retry min limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=5/5 Signal level=0 dBm Noise level=-57 dBm Rx invalid nwid:0 Rx invalid crypt:781 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 root@myubuntu:/home/myubuntu# aireplay-ng -9 eth1 ioctl(SIOCSIWMODE) failed: Invalid argument ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make sure RFMON is enabled: run 'airmon-ng start eth1 <#>' Sysfs injection support was not found either. root@myubuntu:/home/myubuntu#

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  • preparing to migrate MOSS 2007 SP1 content into new server with MOSS 2007 SP2 with the same server n

    - by Albert Widjaja
    To All Experts here, I'd like to perform a MOSS server content migration from the existing single instance server (SQL Server 2008, Windows Server 2008, SharePoint 2007 SP1) all in one and by maintaining the server name only, here's what I had in my migration plan document outline: I have created the new Windows Server 2008 R2 + SQL Server 2008 SP1 and MOSS 2007 SP2 after that: Backup MOSS_ContentDB from SQL Server 2008 SSMS (does this enough to cover all top level sites and its content in the library and doc. repository ?) Backup all top level sites from CA site using the CA Sites backup and restore tools. turn off the old MOSSDEV01 (current server) rename the existing server (TempServ01) into MOSSDEV01 (so that the user bookmark and other link inside MOSS site still working) perform restore of the DB restore the site collection and its content from the backup is that the correct way to do it ? I haven't execute the server configuration wizard to create the same port number of the SSP, CA and the SQL Server DB yet. Any idea and suggestion would be greatly appreciated Thanks.

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  • best practice? Consumer data in MySQL on Amazon EBS (Elastic block store)

    - by jeff7091
    This is a consumer app, so I will care about storage costs - I don't want to have 5x copies of data lying about. The app shards very well, so I can use MySQL and not have scaling issues. Amazon EBS has a nice baseline+snapshot backup capability that uses S3. This should have a light footprint (in terms of storage cost). BUT: the magnolia.com story scares the crap out of me: basically flawless block-level backup of a corrupt DB or filesystem. Is there anything that is nearly as storage efficient as EBS at the MySQL level?

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  • The server rejected the session-establishment request: WCF hosted on IIS

    - by Dave Hanna
    Background: I'm working on a project where we have about a dozen distinct WCF services implemented in an IIS application, communicating over net.tcp on the default port (808), using the Microsoft Net.Tcp Port Sharing Service. I recently added a self-test method to the base class of each of these services so that I could remotely hit the service and get back a status string verifying that it was in operation. We implement this app in a ladder of environments - Development, QA, UAT, and finally production. My problem: My test program, which instantiates a connection to each service in turn and invokes the self-test method, works fine on all the environments below production. We recently moved the app to production, and I'm getting a weird error that I can't explain: On the first of the services that I hit, I get back an exception: "The server at [URL] rejected the session-establishment request". All the other services respond fine. I initially thought there was something wrong with the particular service that was failing, but I tried rearranging the list of services into a different order, and it SEEMS to always be the first service that I hit that fails. (I say SEEMS because it think once in the early iterations of testing, I saw it happen on the second service that it hit. But I haven't been able to reproduce that.) I've looked at application startup delays, and that doesn't seem to be the problem, because I can come back and run the test again as soon as it finishes - a delay of only a minute or two - and get the same error. Also, in the lower level environments, there is a start up delay of probably 30 seconds to a minute, but the result still comes back as expected. I've tried accessing the services over http from INetManager, and I get intermittent failures on all the services - a particular service will return a yellow screen of death on on invocation, then come up with the expected link to the WSDL on the next one seconds later. I'm completely at a loss to explain this behavior, or how to resolve it. I've googled the error message, and not found anything helpful. It may be a configuration issue - the production servers are newly provisioned VM's, and we may not have the config exactly right (whereas all the lower level environments have been running this and other similar apps for some time), but I have not idea what to look for. I've looked at the properties of the app pool that the app is running on and compared it to the lower level environments without finding any differences. If somebody can point me in the right direction, you would have my undying gratitude.

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  • ZFS/Btrfs/LVM2-like storage with advanced features on Linux?

    - by Easter Sunshine
    I have 3 identical internal 7200 RPM SATA hard disk drives on a Linux machine. I'm looking for a storage set-up that will give me all of this: Different data sets (filesystems or subtrees) can have different RAID levels so I can choose performance, space overhead, and risk trade-offs differently for different data sets while having a few number of physical disks (very important data can be 3xRAID1, important data can be 3xRAID5, unimportant reproducible data can be 3xRAID0). If each data set has an explicit size or size limit, then the ability to grow and shrink the size limit (offline if need be) Avoid out-of-kernel modules R/W or read-only COW snapshots. If it's a block-level snapshots, the filesystem should be synced and quiesced during a snapshot. Ability to add physical disks and then grow/redistribute RAID1, RAID5, and RAID0 volumes to take advantage of the new spindle and make sure no spindle is hotter than the rest (e.g., in NetApp, growing a RAID-DP raid group by a few disks will not balance the I/O across them without an explicit redistribution) Not required but nice-to-haves: Transparent compression, per-file or subtree. Even better if, like NetApps, analyzes the data first for compressibility and only compresses compressible data Deduplication that doesn't have huge performance penalties or require obscene amounts of memory (NetApp does scheduled deduplication on weekends, which is good) Resistance to silent data corruption like ZFS (this is not required because I have never seen ZFS report any data corruption on these specific disks) Storage tiering, either automatic (based on caching rules) or user-defined rules (yes, I have all-identical disks now but this will let me add a read/write SSD cache in the future). If it's user-defined rules, these rules should have the ability to promote to SSD on a file level and not a block level. Space-efficient packing of small files I tried ZFS on Linux but the limitations were: Upgrading is additional work because the package is in an external repository and is tied to specific kernel versions; it is not integrated with the package manager Write IOPS does not scale with number of devices in a raidz vdev. Cannot add disks to raidz vdevs Cannot have select data on RAID0 to reduce overhead and improve performance without additional physical disks or giving ZFS a single partition of the disks ext4 on LVM2 looks like an option except I can't tell whether I can shrink, extend, and redistribute onto new spindles RAID-type logical volumes (of course, I can experiment with LVM on a bunch of files). As far as I can tell, it doesn't have any of the nice-to-haves so I was wondering if there is something better out there. I did look at LVM dangers and caveats but then again, no system is perfect.

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  • How to control admission policy in vmware HA?

    - by John
    Simple question, I have 3 hosts running 4.1 Essentials Plus with vmware HA. I tried to create several virtual machines that filled 90% of each server's memory capacity. I know that vmware has really sophisticated memory management within virtual machines, but I do not understand how the vCenter can allow me even to power on the virtual machines that exceed the critical memory level, when the host failover can be still handled. Is it due to the fact that virtual machines does not use the memory, so that it is still considered as free, so virtual machines can be powered on ? But what would happen if all VMs would be really using the RAM before the host failure - they could not be migrated to other hosts after the failure. The default behaviour in XenServer is that, it automatically calculates the maximum memory level that can be used within the cluster so that the host failure is still protected. Vmware does the same thing ? The admission policy is enabled. Vmware HA enabled.

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  • Single sign-on for intranet?

    - by Jason Swett
    I'm trying to set up a single sign-on for my intranet. I've found a couple solutions online but I'm not sure if they apply to my particular situation. I have several subdomains on the same server. One level of user should be able to access all subdomains and another level of user should only be able to access some subdomains. Signing into one subdomain should make it so you don't have to log into any others. Can anyone point me in the right direction? I'm on Ubuntu using Apache.

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  • How much should a Systems Administrator be making?

    - by Curtis
    Hello, I'm a Sys Admin for a small (but successful and growing) company (~60 employees). I've got roughly 5-6 years of actual sys admin experience, plus another 5+ years of lower level work in the industry. I'm responsible for most everything above a helpdesk level in the company (server[windows]/network[cisco]/firewall/SAN[emc] setup/configuration/maintenance/troubleshooting), lead many projects, analyze system data -- I'm sure you've heard it all before...I have a bunch of certs, most are just "nice to have", but the ones that actually apply to my role are CCNA, MSCE, VCP (VMware). If things go wrong, I'm first in line to resolve the issue. I'm not management (no one reports to me). I've seen many of these sorts of questions online before, and I know the typical response is "too many variables, depends on location, industry type" etc etc. I'm just wondering (ballpark) what I should be looking for. I've tried to give as much detail as I can, but if I'm missing something, I'd be glad to post it. Thanks anyone.

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  • What changes can be made to a Microsoft Account using net user on Windows 8?

    - by nhinkle
    In Windows 8, you can log on with a local account or with a Microsoft Account. Both types show up in the Users control panel, but there are different options that you can change for each type. An administrator can change basically any aspect of a local user - name, password, access level, etc. For a Microsoft Account, you can only change the access level (admin/standard) or remove the account. From the command line though, there don't appear to be any restrictions on what you can do a Microsoft Account. Using the net user tool or the Local Users and Groups MMC snap-in, it looks like an administrator would be able to change the password, display name, profile path, etc. of Microsoft Accounts (as well as local accounts of course). Will these commands actually work when applied to a Microsoft Account? Will using them in some way break the link to the Microsoft Account, or will nothing happen at all? I'm hesitant to test since I don't want to mess up my account permanently.

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  • Online backup solution

    - by Petah
    I am looking for a backup solution to backup all my data (about 3-4TB). I have look at many services out there, such as: http://www.backblaze.com/ http://www.crashplan.com/ Those services look very good, and a reasonable price. But I am worried about them because of incidents like this: http://jeffreydonenfeld.com/blog/2011/12/crashplan-online-backup-lost-my-entire-backup-archive/ I am wondering if there is any online back solution that offers a service level agreement (SLA) with compensation for data loss at a reasonable price (under $30 per month). Or is there a good solution that offers a high enough level of redundancy to mitigate the risk? Required: Offsite backup to prevent data loss in terms of fire/theft. Redundancy to protect the backup from corruption. A reasonable cost (< $30 per month). A SLA in case the service provider faults on its agreements.

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  • DNS server redirect users on first visit

    - by Sihan Zheng
    I am looking for a DNS level solution, that redirects a user to a specific IP on the first visit, than directs them to the correct IP on subsequent visits. So the idea is, for example, if a user visits "malicioussite.com", the first time they try to resolve that DNS name, it resolves to the IP of an internal web server, showing them a warning. On subsequent resolves, the users would get the actual IP, so they can visit the site. How can this be achieved? I am really flexible on what I can use, as long as its on the DNS level.

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  • IIS URL Rewrite - Redirect any HTTPS traffic to sub-domain

    - by uniquelau
    We have an interesting hosting environment that dictates all secure traffic must travel over a specific sub domain. E.g. http://secure.domain.com/my-page I'd like to handle this switch using URL Rewrite, i.e. at server level, rather than application level. My cases are: https://secure.domain.com/page = NO CHANGE, remains the same https://domain.com/page = sub-domain inserted, https://secure.domain.com/page https://www.domain.com/page = remove 'www', insert sub-domain In my mind the logic is: INPUT = Full Url = http://www.domain.com/page If INPUT contains HTTPS Then check Full URL, does it contain 'secure'? If YES do nothing, if no add 'secure' If INPUT contains 'www' remove 'www' The certificate is not a wild card (e.g. top level domain) and is issues to: https://secure.domain.com/ The website could also be hosted in a staging environment. E.g. https://secure.environment.domain.com/ I do not have control over 'environment' or 'domain' or the 'tld'. Laurence - Update 1, 19th August So as mentioned below, the trick here is to avoid a redirect loop that could drive anyone well loopy. This is what I propose: One rule to force certain traffic to the secure domain: <rule name="Force 'Umbraco' to secure" stopProcessing="true"> <conditions logicalGrouping="MatchAll"> <add input="{REQUEST_URI}" pattern="^/umbraco/(.+)$" ignoreCase="true" /> <add input="{HTTP_HOST}" negate="true" pattern="^secure\.(.+)$" /> </conditions> <action type="Redirect" url="https://secure.{HTTP_HOST}/{R:0}" redirectType="Permanent" /> </rule> Another rule, that then removes the secure domain, expect for traffic on the secure domain. <rule name="Remove secure, expect for Umbraco" stopProcessing="true"> <match url="(.*)" ignoreCase="true" /> <conditions logicalGrouping="MatchAll"> <add input="{HTTP_HOST}" pattern="^secure\.(.+)$" /> <add input="{REQUEST_URI}" negate="true" pattern="^/umbraco/(.+)$" ignoreCase="true" /> </conditions> <!-- Set Domain to match environment --> <action type="Redirect" url="http://staging.domain.com/{R:0}" appendQueryString="true" redirectType="Permanent" /> </rule> This works for a single directory or group of files, however I've been unable to add additional logic into those two rules. For example you might have 3 folders that need to be secure, I tried adding these as Negate records, but then no redirection happens at all. Hmmm! L

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  • Setting-up Windows Server 2003 as an L2TP/IPSEC VPN server

    - by andyjohnson
    I'm looking for a pointer to step-by-step instructions for setting-up a Win Server 2003 Std box as a L2TP/IPSEC VPN server. I don't need to use certificates - pre-shared key is sufficient - and the server isn't on a domain. All the sources of information I've found assume a level of sysadmin experience that I don't have - which is why I'm looking for a step-by-step description. I'm a experienced developer, not an IT person, but I have what I'd guess is intermediate level experience of configuring/administering small-scale servers, and have set-up OpenVPN-based VPNs on Windows.

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  • securing server to server http post

    - by ad-inf
    Website is developed on JSF, Servlet, using apache web server. In my website, I accept data submission from few restricted websites using HTTP POST method. We exchange some secure key to ensure that correct source is sending data. But is there any way to ensure that the data is submitted from specific domain / IP address only? In application level I can check request.header('Referer') , but some proxy or firewall might hide the referer. Can this configuration done on firewall or webserver level to authenticate server to server communication? Eg. Say my website is a payment gateway website, integrated with www.abc.com. I want only abc.com to submit data. So a user using abc.com should be able to submit data to my website only through abc.com, and not any other website.

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  • Ubuntu: Take actions when system temperature gets too high

    - by Josh
    One of the CPU fans on my Compaq Presario laptop running Ubuntu 9.10 seems to have bit the dust. The fan is deep within the case and I intend to replace the laptop in the next 6 months so it's not worth replacing it. I have the laptop on a cooling pad and most of the time the system is fine, CPU temps around 90°-110°F. Occasionally, however, I'm seeing random lockups which I believe is due to the system overheating. How can I configure the system to: Lower the CPU speed when the temperature reaches a certain level? (I.E. 110°F) Shutdown the system when the tempature reaches a critical level? (And what would that be? 130°?)

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  • Implementation of SSL on SaaS App with seprate domains

    - by asifch
    Hi, We are developing a SaaS application in Asp.net, where we have used the Single application and Per Tenant Database. The application is more like a Saas e-commerce where SSL and data separation are required features. Now we want that every Tenant can have his separate top level domain names instead of the second level domains like 37Signals. So all the domains abc.com and xyz.com are using the same single app. What i need to know is how to implement and deploy the https in the application so that everything works out fine, also how should we configure the NameServer and web application on IIS so that all the domains are pointing to the one application.

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  • Backing up Hyper-V VMs using "wbadmin" failing on Windows Server 2012

    - by Ederson
    I'm trying to backup a single VM using "wbdamin". I'm using this command-line: wbadmin start backup -backupTarget:d: -hyperv:VM_Machine_Name -quiet But the backup have no success. Looking at my Events, I get the following information: Source: SSP Event ID: 16387 Level: Error "Writer Microsoft Hyper-V VSS Writer experienced some error during snapshot creation. More info: ." ============================= Source: Backup Event ID: 521 Level: Error "The backup operation that started at '?2014?-?06?-?11T15:38:44.459000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '0x8100010C'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved." ============================= Source: VSS No Event Errors. I didn't find any info about "0x8100010C" error code through the web and I'm stuck. Anyone know how to fix this?

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