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• NVRAM for journals on Linux?

  - by symcbean

  I've been thinking about ways of speeding up disk I/O, and one of the bottlenecks I keep coming back to is the journal. There's an obvious benefit to using an SSD for the journal - over and above just write caching unless of course I just disable the journal with the write cache (after all devicemapper doesn't seem to support barriers). In order to get the benefits from using a BB write cache on the controller, then I'd need to disable journalling - but then the OS should try to fsck the system after an outage. Of course if the OS knows what's in the batter-backed memory then it could use it as the journal - but that means it must be exposed as a block device and only be under the control of the operating system. However I've not been able to find a suitable low-cost device (no, write-levelling for Flash is not adequate for a journal, at least one which uses Smartmedia). While there's no end of flash devices, disk/array controllers with BB write caches, so far I've not found anything which just gives me non-volatile memory addressable as a block storage device.

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• Win2008 DC in a Windows 2000 domain: can I keep the old DC?

  - by gravyface

  Will be putting a new Windows 2008 SE Server into a single domain network with two domain controllers, both running Windows 2000 Server. The functional level of the domain is mixed mode/2000. Until a second 2008 DC can be purchased, I'd like to leave the current Win2k operational master DC as a backup DC as the other member servers running 2003 have either accounting/SQL or Exchange on them. Eventually all the w2k servers will be decommissioned, but until then, I need another DC for redundancy. Following the standard process for adding a new DC, can I leave the old operational master DC (or the other backup DC) running after I transfer the FSMO roles to the new server? Will this cause any issues?

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• Installing Domain Controller on Hyper-V Host

  - by MichaelGG

  Given a resource limited setup consisting of 2 host machines (HyperV-01 and HyperV-02), is it OK to put the domain controllers in parent partition, instead of their own VM? The main reason is that if the DCs go into a child partition, starting from cold on both machines could lead to a bit of an issue, as there'd be no DCs around until well after both parents have booted. I'm guessing this might cause undesirable effects. Am I correct to be worried about joining the host systems to a domain that's only on VMs? The biggest drawback I've heard so far is that if AD gets heavily used, its resources could cut into HyperV's. I'm not concerned about that for this deployment. Any other suggestions? (Besides finding a 3rd machine and running AD on it.)

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• enable offline files for all users home drives via Group policy or other

  - by JohnyV

  I am trying to get all users of particular notebooks to make the users h drive offline. i know you can do it manually but is there a way to set this value somewhere so that users dont have to do it themselves? I am running 2008r2 domain controllers and windows 7 clients. I have folder redirection enabled but i want to make the users h: available to them when they are offline. I know the group policies are located in the computer configurationPoliciesadministrative templatesNetwork but there doesnt seem to be any place to select which folders/drives will be offline files without a users input. Even if there is another method not through GP. Thanks

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• Suppress log messages about 3ware disk temperature changes on CentOS?

  - by Stefan Lasiewski

  I have a number of CentOS 5 servers which use 3ware RAID controllers. These servers are bugging my team with messages about minor temperature changes, like this: Jun 8 12:32:39 HOST smartd[1231]: Device: /dev/twa0 [3ware_disk_01], SMART Usage Attribute: 194 Temperature_Celsius changed from 119 to 118 Jun 8 12:32:39 HOST smartd[1231]: Device: /dev/twa0 [3ware_disk_03], SMART Usage Attribute: 194 Temperature_Celsius changed from 122 to 121 How can I suppress these messages? According to man smartd.conf : To disable any of the 3 reports, set the corresponding limit to 0. Trailing zero arguments may be omitted. By default, all temperature reports are disabled (´-W 0´). On my systems, smartd is reporting about temperature changes by default. I tried a manual approach. In /etc/smartd.conf, I have the following: /dev/twa0 -d 3ware,1 -a -W 0 /dev/twa0 -d 3ware,3 -a -W 0 But this still does not suppress the messages. Since these messages show up in /var/log/messages, LogWatch is sending unnecessary emails every night.

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• Logitech M185 Wirless Mouse issue

  - by Elliot Harrison

  An issue with a Logitech M185 mouse today. A user is unable to use the device. The device works perfectly fine on my PC (It appears as HID-compliant mouse), but not on her laptop. It does not appear in her device manager on the 'Mice and other pointing devices' section. I did notice an unknown device in the Universal Serial Bus Controllers section, but when I try to update the driver, it says it has the most up to date driver. We've tried plugging in the dongle in multiple USB slots but no luck. Any advice? It's a HP 620 Laptop on Windows 7. Thank you :)

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• How to make AD highly available for applications that use it as an LDAP service

  - by Beaming Mel-Bin

  Our situation We currently have many web applications that use LDAP for authentication. For this, we point the web application to one of our AD domain controllers using the LDAPS port (636). When we have to update the Domain Controller, this has caused us issues because one more web application could depend on any DC. What we want We would like to point our web applications to a cluster "virtual" IP. This cluster will consist of at least two servers (so that each cluster server could be rotated out and updated). The cluster servers would then proxy LDAPS connections to the DCs and be able to figure out which one is available. Questions For anyone that has had experience with this: What software did you use for the cluster? Any caveats? Or perhaps a completely different architecture to accomplish something similar?

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• Network monitoring solution

  - by Hellfrost

  Hello Serverfault ! I have a big distributed system I need to monitor. Background: My system is comprised of two servers, concentrating and controlling the system. Each server is connected to a set of devices (some custom kind of RF controllers, doesnt matter to my question), each device connects to a network switch, and eventually all devices talk to the servers, the protocol between the servers and the devices is UDP, usually the packets are very small, but there are really a LOT of packets. the network is also somewhat complex, and is deployed on a large area physically. i'll have 150-300 of these devices, each generating up to 100+ packets per second, and several network switches, perhaps on 2 different subnets. Question I'm looking for some solution that will allow me to monitor all this mess, how many packets are sent, where, how do they move through the network, bandwidth utilization, throughput, stuff like that. what would you recommend to achieve this? BTW Playing nice with windows is a requirement.

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• Demoted domain controller and now IIS has permissions issues

  - by tladuke

  I have a machine that was a domain controller and everything else, includin an IIS site. I built new 2 new domain controllers and transferred the FSMO roles and waited a day and then demoted the original domain controller. Now the IIS site says : HTTP Error 401.2 - Unauthorized You are not authorized to view this page due to invalid authentication headers. I have a call in with the web app vendor, but maybe someone can guess what I need to fix now. I haven't looked at IIS since this was installed and am pretty lost. I thought about restoring the machine from a backup, but I think that would be an Active Directory disaster, right? The server is Windows 2008 (not R2). The new DCs are 2008 R2

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• What kind of SATA interface is on a Thinkpad X120E?

  - by Jorge Castro

  I recently ordered a Thinkpad X120E with an AMD Fusion (Zacate) chipset. I am eyeballing an SSD for it, however newer SSDs are coming out with 6Gbps SATA interfaces. I doubt such a cheap laptop has 6Gbps SATA, but I'm debating waiting the a bit longer until the Intel 510 series come out, if anything to future proof myself by putting it in this laptop and then later on when I do upgrade to a laptop with 6Gbps SATA I'll be good to go. The hardware manual mentions that the motherboard is for a "AMD Fusion E-350" but the specifications of each hardware part isn't part of the manual. Does anyone have any information on the kind of SATA controllers in Fusion laptops so I can make a better purchasing decision?

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• Parity Initialization after putting in two new disks

  - by lbanz

  All my firmware is up to date on the server and the controllers. Storage crashed over the weekend. I rebooted it and it detected that I put in two new disks last week (I did check that both disk completed the rebuilding process last week). After it booted into the OS I see that it gave me an information message. After 18 hours it is at 54% so it is looking healthy. But I need to replace 5 more disk in the msa. Should I wait for this message to finish before replacing more disks? 785 Background parity initialization is currently queued or in progress on Logical Drive 1 (15.0 TB, RAID 5). If background parity initialization is queued, it will start when I/O is performed on the drive. When background parity initialization completes, the performance of the logical drive will improve.

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• Win7 backup fails with "The system cannot find the file specified" 0x80070002 - has worked before

  - by Thorbjørn Ravn Andersen

  I have a 500 GB USB-disk which has been used as a backup device for a few years now, but now fails without telling me why. This is a Dell box with Intel USB-controllers (so the NVIDEA problem does not apply here). I have previously had problems with a Git package marking a non-existent directory for backup (adding it make the backup succeede). The inaccessible boot partition problem described in Windows Backup fails with 0x80070002: "The system cannot find the file specified" does not apply to me. I would appreciate hints on where to look to identify why my backup fails so I can fix it.

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• Replacing sick NTP server source and re-synching (with internal time currently 2 minutes late)

  - by l0c0b0x

  One of the external NTP servers (the primary one--currently) we're using as source seems to not be responding to NTP calls. Unfortunately, on our core router (Cisco 6509), the NTP functionality hasn't switched to the secondary NTP external server as it was expected. As a result, our core router which is pretty much our main internal NTP source is 2 minutes late. I'm planning to fix the external router issue by making the external NTP source be the one currently working. I'm wondering, how much will a 2 minute change affect my users and services? Specially since these days, we're heavily relying on certificate-based authentication. We're a Windows/Cisco shop. Internal NTP setup: [Core Router 1 / Cisco 6509]: looking out to two external NTP servers (in which the primary one is not responding to NTP calls) [Core Router 2]: Synching with Core router 1 (primary), working external router (secondary) [Other Cisco network devices]: Synching with Core router 1 (primary), core router 2 (secondary) [Domain controller(s)]: Synching with Core router 1 [All windows clients/servers]: Synching with domain controllers

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• Computers "applying computer settings" for a long time on start-up...why?

  - by tombull89

  Hello. Might be a bit of a slong shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when it gets to "applying computer settings" it can hang for a long time (~15 minutes). If you unplug the computer from the network it starts up fine, gets to the login screen, then you can plug the network cable in and it will work fine. I don't think it's anything to do with the fact we've been coming close to running out of IP addresses or a problem with our DHCP. Microsoft KB says apply the latest service pack, which we've done, and check a service. Servers and domian controllers are S2003, Computers and Desktops are XP. Does anybody have any thoughts on what to try?

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• Intel SASWT4I SAS/SATA Controller Question

  - by Joe Hopfgartner

  Hey there! I want to assemble a cheap storage sytem based on the Norco RPC-4020 Case. When searching for controllers I found this one: Intel® RAID Controller SASWT4I This is a quote form the Spec Sheet: Scalability. Supports up to 122 physical devices in SAS mode which is ideal for employing JBODs (Just a Bunch Of Disks) or up to 14 devices in RAID 0, 1, 1E/10E mode through direct connect device attachment or through expander backplane support. Does that mean I can attatch 14 SATA drives directly to the controller using SFF-8087 - 4x SATA breakout cables? That would be nice because then I can choose a mainboard that has 6 Onboard SATA and i can connect all 20 bays while only spending 155$ on the controller and like another 100$ on cables. Would that work? And why is it 14 and not 16 when there are 4 Ports? I am really confused about all the breakout/fanout/(edge-)expanding/multiplying/channel stuff...

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• Why does my wifi fail to stay connected?

  - by Mark0978

  We have 5 different laptops in the house, 1 macbook, 1 Compaq, 3 dells, plus numerous little devices like ipods, squeezeboxs, squeezebox radios and controllers, you name it. All of them connect to and stay connected to the "downstairs" WIFI just fine. But my laptop (the most expensive of the lot) refuses to stay connected, preferring the much weaker and slower signal upstairs. My laptop is running Win7 (64 bit) Ultimate with an Intel 3945ABG WIFI contoller (It's a Dell Precision M6300). The WIFI Access Point is a Cisco WRT54G2 V1 with firmware: Firmware: DD-WRT v24-sp2 (10/10/09) micro Time: 11:11:10 up 42 min, load average: 0.06, 0.01, 0.00 WAN: Disabled

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• Active Directory replication failing with Access is Denied

  - by Justin Love

  I recently discovered that Active Directory replication started failing about a month ago. If I attempt to Replicate Now from the failing domain controller, I receive The following error occurred during the attempt to synchronize the domain controllers: Access is denied. It is between two servers at a remote site. One is Windows 2003 and the other is Windows 2000; the Windows 2000 machines is experiencing the errors. The domain is older OUR_DOMAIN style. Attempts so far: I disabled Kerberos service on the Windows 2000 server and restarted RPC and RPC locater services have expected settings HKEY_Local_Machine\Software\Microsoft\Rpc\ClientProtocols missing ncacn_nb_tcp on Windows 20003 server (added) Portqry reports okay Firewall disabled netdom resetpwd (and reboot) on Windows 2000 server.

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• IIS: Content-Length 0 for CSS, Javascript and Images

  - by Adrian Grigore

  After a clean re-installation of my Windows 7 system, I can't get IIS 7 to properly deliver any static content. Dynmic content (ASPX pages and content served by ASP.NET MVC controllers) works fine, but static files such as CSS, Javascript and Images give me a 200 OK status code and a Content-Length of 0. The problem occurs with all web sites on my server, even a brandnew ASP:NET MVC template project with no changes. It also occurs with both Firefox and IE 8. What could possibly be the problem? Note that I also installed the latest Windows Azure SDK, perhaps that messed up some settings. But I don't know how to proceed with for troubleshooting this.

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• How can I prevent users from installing software?

  - by Cypher

  Our organization is a bit different than most. During certain times of the year, we grow to thousands of employees, and during off-times, less than a hundred. Over the course of a few years, many thousands of people have come and gone in our offices, and left their legacy behind in the form of all sorts of unwanted, unapproved, (and sometimes unlicensed) software installs on our desktops. We are currently installing redundant domain controllers and upgrading current servers, all running Windows Server 2008 Enterprise, and will eventually be able to run a pure 2008 DC network. With that in mind, what are our options in being able to lock down users, such that they cannot install unauthorized software on systems without the assistance (or authorization) of the IT group? We need to support approximately 400 desktops, so automation is key. I've taken note of the Software Restrictions we can implement via Group Policy, but that implies that we already know what users will be installing and attempting to run... not quite so elegant. Any ideas?

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• Adding a Windows Server 2012 Essentials server to an existing domain, without migrating the AD

  - by TiernanO

  I have an existing Active Directory in house, a mix between a Win2K8R2 and Win2K3 domain, and i would like to test out Windows Server 2012 Essentials BETA on the network. When walking though the install, it gives me the option of a new domain, or migrating from an existing domain. when clicking existing, it tells me i can only have one SBS server running on a domain at a time... So, i dont have any existing SBS servers in house (both are full standard or enterprise editions) but i do plan on keeping at least one of these extra servers running... So, how do i get a 2012 Essentials server to join a domain, and not migrate the existing domain? or if i do migrate, can i still get one of the other boxes to act as secondary controllers?

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• Add Bookmark to IE automatically for new users on a computer

  - by Kyle Brandt

  When I set up a PC, I would like to be able to have it so when anyone logs into that PC from the domain a couple of IT bookmarks will be in IE. I read I can do this with a Domain-Level group policy, but unfortunately, with my current domain group policies have not gone well, so I have fear (Rather not get into this in this question). Can I do this at the PC level when I deploy a new computer? So any domain users who log into the PC will have these bookmarks added when their profile is created (no roaming profiles). These are XP machines, and the domain is run by 2003 controllers.

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• Cross-Forest Trust

  - by cdalley

  I am looking at testing a cross-domain trust we can have two domain controllers (with different forests and domain names) setup so we can move everyone onto the new domain. We do NOT run exchange on site and we do not have any links to O365 to AD currently. Onto the problem: I have setup two DCs in a Virtual Machine: They are on the same network 192.168.0.* The Windows 2003 server: Name: OLDSRVR "Clone" of our current Domain Controller IP: 192.168.0.1 Domain: internal.test.com The Windows 2012 server: Name: ADCTEST01 Brand new domain setup from scratch separate to internal.test.com Domain: internal.test2.com IP: 192.168.0.2 OLDSRVR can only see ADCTEST if it has dynamic IP set. If I set a static IP it cannot see it. If I try using the dynamic IP and try to join it gets to the end then complains "??The trust relationship between this workstation and the primary domain failed" Any ideas?

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• Plesk directory structure problems

  - by johnnietheblack

  I have an entire website with the following directory structure: /example.com /html (public) /css /js index.php /lib session.php other_lib_files.php /views index.php /models /controllers As illustrated, the html is public, and anything above it is private. My site now needs to upgrade servers, and the new server (Linux w/ Plesk) has the following structure (reduced to the problematic parts below): /myplesksite.com /httpdocs /css /js index.php /private /lib /models /views What I would THINK is that I should be able to put my /lib, /views, /models, etc in the directory directly above /httpdocs, the same way I had it in my previous server. Is that possible? Or do I have to put it in private? I would really love not to have to adjust my internal paths throughout the site if not necessary...

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• Suggestions on providing HA access to an external (fibre) RAID subsystem

  - by user145198

  We are looking at upgrading our storage capacity with an external RAID subsystem that has redundant (2) fibre controllers, each controller has 4 x 8 Gbps fibre ports. I would like to make access to this storage system occur via HA Linux. Ideally I would connect 2 fibre ports from each controller into each Linux server, and then export either NFS or iSCSI via a 10 Gbe interface. I have seen plenty of references to DRBD, however all of those references tend to use block storage that is solely attached to each machine, rather than having a shared block storage device, so I am unsure if DRBD could (or should) be used in this case. Ideas?

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• Dell Power Edge R515 - Replacing a Bad Hard Drive in a RAID

  - by LonnieBest

  I've ordered a new hard drive to replace a bad one in a Dell Power Edge R515. The manual covers obvious topics regarding physical replacing of hard drives, but I've never done this before on a production server where RAID is involved. I've heard people talk about this topic, and I've heard that some servers have RAID controllers that are smart enough to allow you to just put in the new drive (hot swap), and then the server will know automatically how to rebuild that drive to be what the old one was to the system. Where do I find the proper procedure for replacing a failed hard drive on a live production Dell Power Edge R515? Can someone with experience tell me how easy or hard this usually is?

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