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• I've created a software RAID on SUSE EL 10 and now I need to monitor it.......

  - by Thomas B.

  I have created a Software Raid using the yast2 GUI on SUSE ES 10/11. The raid works great and it's a raid 5. I have 5 Drives they are cheap 2GB Cases that have 2 - 1TB Drives in each case (Serial ATA Drives) and I connect them in via Esata to the motherboard. The problem I have as this is "cheap" storage when of the the 5 drives goes out on the RAID I seem to have no logs of any issues and it get's harder and harder to write to it until it dies. I use SAMBA to mount the 4TB parition to my PC's in my home on a GIG network. My question is this, are there any good (Free) tools in Linux to monitor a raid or the drives on the raid to detect any problems??? I haven't found any yet and was just wondering if some exist.

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• Symmetrix gatekeepers on Solaris 10

  - by Milner

  I have some Solaris machines that are connected to EMC Symmetrix for SAN storage. Apparently the Symm has a gatekeeper device that is used with the symmetrix CLI. We don't need the CLI, but I have these gatekeeper devices that constantly fill /var/adm/messages and the like with corrupt label errors. Is there anything I can do (short of deleting the devices on machine start) to get rid of them? Or should I just try to get our SAN guy to get the installer for the CLI? These things are getting annoying, and the devfsadmd daemon keeps rediscovering them on boot.

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• my sweet old VHS collection

  - by microspino

  Which is the best procedure and digital format to resurrect my old VHS library i a way I can see It on my LCD TV? I have a not so big collection 100 VHS I have plenty of storage I have a network media tank (A110 popcorn Hour but I can also purchase a new media center if needed) I have an old working VCR (but again I can pick a specific one new if you think It's better to save quality) The VHS cassette collection seems to have retained a good quality over the years. Of course I have some computer (either mac and pc) to do the process. Which software do I need/miss? Please give me some advice.

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• use network drives as mount points during installation?

  - by ajsie

  is it possible to use network storage locations as mount points during installation? cause i want to separate system (ubuntu) with data (personal files). eg. if i have 5 computers i don't want to recreate /home/david 5 times. so i want to mount networkdrive/home to /home in local ubuntu server. so ALL users home folders could be used and maybe also networkdrive/projects to /projects. in that way its ok if i by accident repartitioned the local ubuntu server cause all data is not there on that server, but in the data server. is separating "data" from "logic" good in this case? and is it possible? what protocol should i use for the mapping over internet? (maybe the server is in Sweden, and the data is in Norway). thanks.

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• Routing traffic to specific web sites through Ethernet, rest via wifi on Mac OS X 10.6?

  - by user32448

  Hi I have two separate Internet connections connected to a Mac and I'd like one of them (via Ethernet eth0 gateway 192.168.2.1) to serve for just backing up to an remote online storage, and the other one (via Airport en1 gateway 192.168.1.1) for all other Internet traffic. I tried using "route" from the terminal as follows: sudo route add -host 98.207.226.113 -interface eth0 (just for testing against the site www.whatismyip.org whose IP is 98.207.226.113, to see through which gateway the traffic is routed) I can see using netstat that the route is added: $ netstat -rn -f inet Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.1.1 UGSc 49 0 en1 98.207.226.113 192.168.2.1 UGSc 0 0 eth0 However, the traffic in this case does NOT get routed properly through Ethernet, as if the routing definition I made is ignored. Any ideas? Thanks!

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• SAS instead of SATA 2 for my hard drives?

  - by jasondavis

  I am building a new system soon, I will have multiple 1-2tb hard drives for storage in it. I only have experience uasing the sataII drives but I saw somewhere that I should be using something like SAS? I read that if I were going to have 20 drives that I could use 4 SAS cables vs 20 SATA cables. Can someone help me understand this better? If it were only 4 cables then how would 20 drives hook up? Also can a regualr sata2 drive hook up to that?

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• How do you passthrough native SATA drives to a guest on ESXi?

  - by John

  I have ESXi 4.0 running on an Intel DX58S0 Mothboardboard with an Intel Core i7 930 processor. VT-d is also enabled. I have three drives in the system, drive 0 is used for ESXi. Drive 1 and 2 contain data from an older machine and show up under the "Storage Adapters" section in configuration. I would like to allow a guest machine to access the data on these drives (as nativly as possible). I have enabled passthrough of the motherboard's built in SATA controller (Intel/Marvell 88SE6121 ). This controller shows up in my guest OS, but the guest shows no drives aside from the normal virtual drive. I have tried a Linux guest and Windows7. I have also configured the host machine to try IDE/RAID/ACHI modes for the SATA controller. Any ideas how I can configure one of my guests to get at the raw data on these drives?

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• Is it possible to create a delta VM?

  - by iTayb

  I have a VM of approx. 18GB. Sometimes I need temporally clones of it, so I clone it. The problems are: * It takes a while until it's done. * Sometimes I happen to need dozen of clones and I'm running out of storage. I wonder if there's a way to create a VM that saves only the delta (difference) since the delployment out of the source machine. That way each new VM's filesize should be 100MB at most, and creating it will be much faster. I've heard that VMWare View is using this concept. Is such a thing possible for ESXi as well? I'm using ESXi 4.1 with VSphere 4.1. Thanks!

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• FreeNAS - how to "Exclude from file" in Rsyncd (GUI)

  - by user179181

  I am trying to set rsync tasks to Pull user profiles from 11 Windows machines running DeltaCopy Server and then configure ZFS periodic snapshot tasks for a backup solution. So far this has been working fine, although i would like to exclude certain file types like .DAT or NTUSER.DAT. My Exclusion file resides on the local ZFS Dataset (Receiving side) and is as follows: Temp Temporary Internet Files NTUSER.DAT NTUSER.DAT.LOG *.dat *.tmp *.DAT.log *.ost *.pst The command i typed under Auxiliary Parameters (Rsyncd Global Conf under services)is as follows: exclude from = /mnt/Storage/User_Profiles/exclude.txt Ive tried deleting the .DAT files from the receiving end and just as i start to get excited i click refresh and there they are again

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• Can someone correct me about Windows 2008 DFS implementation

  - by cwheeler33

  I have 2 two Windows 2003 file servers using DoubleTake at the moment. They are in an 2003 AD domain. And each server has it's own disk set. It is time to replace the servers... I want to use Windows 2008 64bit Ent. I was thinking of using DFS-R to replace DoubleTake. The part I'm not sure about is clustering. Do I need to have shared storage if each server has a copy of the data? I want to have the data available to the same share name, so maybe I don't fully understand how DFS is set up. I currently have about 6TB of data. I expect to grow by 3TB a year on these file servers. Any resources/books that could teach me would be good to know as well.

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• Backup Exec backup-to-disk folder creation - Access denied

  - by ewwhite

  I'm having a difficult time creating a backup-to-disk folder in Symantec Backup Exec 12.5 and Backup Exec 2010. The backend storage is a Nexenta/ZFS-based NAS filer sharing the volume via CIFS. I've also seen the issue on other *nix-based NAS devices. I've attempted mapping the drive, providing the full paths to the folder, etc. I can browse to the share just fine from within Windows, but Backup Exec fails to create the B2D folder with different variants of a Unable to create new backup folder. Access denied error. I've attempted creating service accounts in Backup Exec to handle the authentication, but nothing seems to work. What's the key to making this work?

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• Too much free space on FreeNAS - ZFS

  - by Guillaume

  I have a FreeNAS server with 3 x 2 To disks in raidz1. I would expect to have about 4 To of space available. When I run zpool list I get: [root@freenas] ~# zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT main_volume 5.44T 3.95T 1.49T 72% ONLINE /mnt I was expecting a size of 4 To. Also, used space as reported by zpool list does not match what's reported by du: [root@freenas] ~# du -sh /mnt/main_volume/ 2.6T /mnt/main_volume/ There are quite a few things that I dont yet completely understand about ZFS. But at the moment I am mostly worried that I misconfigured my system and that I dont have any storage redundancy. How can I make sure I did not do an horrible mistake ... For the sake of completeness, here is the output of zpool status: [root@freenas] ~# zpool status pool: main_volume state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM main_volume ONLINE 0 0 0 raidz1 ONLINE 0 0 0 gptid/d8584e45-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0 gptid/d8f7df30-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0 gptid/d9877cc3-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0 errors: No known data errors

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• Distribute terrabyte files to the public from web server

  - by MarkJ

  Hi We need to set up a website which makes two or three large files publicly available - the files will be 1 or 2 terrabytes each. Although they will be public, in practise I expect only a relatively small number of scientists will want to download them. What is the best way to allow this? I've had a quick talk to a web-hosting provider (rackspace) and they suggested a hybrid solution. An entry-level managed server (we predict fairly low traffic for the website, but we do need to install some custom CGI software). Some cloud storage which hooks into Limelight Networks. This would host the large files, for download by FTP. It sounded OK to me but I know relatively little about server administration. Does it make sense? Thanks in advance, Mark

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• Mounting root failed. Dropping into basic maintenance shell

  - by vmsystem

  Hi, I have purchased AMD Phenom X4 955 3.2GHZ processor with supporting gigabyte GA-MA785GM-US2H mother board / 6GB DDR2 RAM / 500GB SATA drive for learning Vmware ESX 3.5 product. In the above configuration, I have installed windows xp 64 bit operating systems and continue to installed vmware workstation 6.5. From the VM workstation, I can able to install ESX3.5 update2, but I unable to start properly, please refer the below mention error. “Mounting root failed. Dropping into basic maintenance shell. To collect logs for VMware, connect a USB storage device and run 'bin/vm-support '. Machine will be rebooted when you exit from this shell.” The same was tested in the windows 2003 Enterprise Edition server / windows 7 32bit / windows 7 64bit also, Please help me to resolve the issue.

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• Best way to convert from IMAP to POP3?

  - by Brad

  At work, I connect to a corporate Exchange server via IMAP and Thunderbird 3. Over the course of a year or so, I've created quite a few folders on the server and have a lot of mail stored there. I'm hitting the storage limit of my mail account and want to convert to pulling mail down to my local box (running Linux) via POP3. I know that polling mail will only get mail in INBOX, but I'm wondering if there are solutions out there that could be used to pull mail from the other folders as well, or am I doomed to moving mail into the inbox manually and polling over and over again?

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• How to Mirror or Clone a Spanned Volume in Windows 2008

  - by Matt

  I have a spanned volume (3x6+ TB disks spanned to one 20+ TB volume) that I need to mirror or clone to a new 20+ TB (unspanned) volume. Once mirrored or cloned I'm going to destroy the original volume and reuse the storage elsewhere. Windows 2008 will not allow me to mirror it because the original is a spanned volume. I cannot simply copy the data, because there are sparse files on the volume. So the OS thinks there is 150+ TB used on the disk when there really is only around 18TB used physically. When I try to use the copy command it won't run because it thinks the destination volume needs to be 150+ TB to hold it all. A conundrum, but I figure someone here has the answer. Thanks, Matt

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• What are performance limits of a database?

  - by Tommy

  What are some rough performance limits (read/s, write/s) for a single database server (no master-slave architecture), assuming storage on disk? How many read/s, write/s, depending on the kind of disk? (SSD vs non-SSD) , assuming simple operations (select one row by primary key, update one row, correctly indexed). I assume this limit is dependent on disk seek/write. EDIT: My question is more about getting rough metrics of the number of operations a database supports: to be able to know for example, if a new feature triggering 300 inserts/s can be supported without scaling out with additional servers.

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• HDD situation - what would be best - data and backup

  - by Sam Johnson

  I just installed W8 on an Intel 330 180 GB SSD. I have 3 1TB HDDs. 1 HDD will be external for backup. 2 HDDs are then available for my PC. I do not need 2 TB of storage, so I thought I'd set these up to be exact clones of one another, so that if one dies I have a backup in the computer to go along with my external. Is this a good set up? How best would this be accomplished? I've heard people suggest RAID but I've never done RAID, have no idea what it is, and have no idea how to set it up in my BIOS. Thanks in advance

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• jQuery - I'm getting unexpected outputs from a basic math formula.

  - by OllieMcCarthy

  Hi I would like to start by saying I'd greatly appreciate anyones help on this. I have built a small caculator to calculate the amount a consumer can save annually on energy by installing a ground heat pump or solar panels. As far as I can tell the mathematical formulas are correct and my client verified this yesterday when I showed him the code. Two problems. The first is that the calculator is outputting ridiculously large numbers for the first result. The second problem is that the solar result is only working when there are no zeros in the fields. Are there some quirks as to how one would write mathematical formulas in JS or jQuery? Any help greatly appreciated. Here is the link - http://www.olliemccarthy.com/test/johncmurphy/?page_id=249 And here is the code for the entire function - $jq(document).ready(function(){ // Energy Bill Saver // Declare Variables var A = ""; // Input for Oil var B = ""; // Input for Storage Heater var C = ""; // Input for Natural Gas var D = ""; // Input for LPG var E = ""; // Input for Coal var F = ""; // Input for Wood Pellets var G = ""; // Input for Number of Occupants var J = ""; var K = ""; var H = ""; var I = ""; // Declare Constants var a = "0.0816"; // Rate for Oil var b = "0.0963"; // Rate for NightRate var c = "0.0558"; // Rate for Gas var d = "0.1579"; // Rate for LPG var e = "0.121"; // Rate for Coal var f = "0.0828"; // Rate for Pellets var g = "0.02675"; // Rate for Heat Pump var x = "1226.4"; // Splittin up I to avoid error var S1 = ""; // Splitting up the calcuation for I var S2 = ""; // Splitting up the calcuation for I var S3 = ""; // Splitting up the calcuation for I var S4 = ""; // Splitting up the calcuation for I var S5 = ""; // Splitting up the calcuation for I var S6 = ""; // Splitting up the calcuation for I // Calculate H (Ground Sourced Heat Pump) $jq(".es-calculate").click(function(){ $jq(".es-result-wrap").slideDown(300); A = $jq("input.es-oil").val(); B = $jq("input.es-storage").val(); C = $jq("input.es-gas").val(); D = $jq("input.es-lpg").val(); E = $jq("input.es-coal").val(); F = $jq("input.es-pellets").val(); G = $jq("input.es-occupants").val(); J = ( A / a ) + ( B / b ) + ( C / c ) + ( D / d ) + ( E / e ) + ( F / f ) ; H = A + B + C + D + E + F - ( J * g ) ; K = ( G * x ) ; if ( A !== "0" ) { S1 = ( ( ( A / a ) / J ) * K * a ) ; } else { S1 = "0" ; } if ( B !== "0" ) { S2 = ( ( ( B / b ) / J ) * K * b ) ; } else { S2 = "0" ; } if ( C !== "0" ) { S3 = ( ( ( C / c ) / J ) * K * c ) ; } else { S3 = "0" ; } if ( D !== "0" ) { S4 = ( ( ( D / d ) / J ) * K * d ) ; } else { S4 = "0" ; } if ( E !== "0" ) { S5 = ( ( ( E / e ) / J ) * K * e ) ; } else { S5 = "0" ; } if ( F !== "0" ) { S6 = ( ( ( F / f ) / J ) * K * f ) ; } else { S6 = "0" ; } I = S1 + S2 + S3 + S4 + S5 + S6 ; if(!isNaN(H)) {$jq("span.es-result-span-h").text(H.toFixed(2));} else{$jq("span.es-result-span-h").text('Error: Please enter numerals only');} if(!isNaN(I)) {$jq("span.es-result-span-i").text(I.toFixed(2));} else{$jq("span.es-result-span-i").text('Error: Please enter numerals only');} }); });

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• Recommending simple appliance for DansGuardian, iptables, snort inline

  - by SRobertJames

  I'm currently using a Linksys E2000 with dd-wrt. I'd like to add DansGuardian for Content Filtering and snort-inline for IPS; but those require a more powerful box (mainly, more storage). Can you recommend a good device to use? I'm open to both overwrite-the-firmware (like dd-wrt) and designed-to-be-customized boxes. Requirements: 1. 5+ Ethernet ports, pref. GigE 2. small form factor 3. No noise (office environment) 4. low power 5. Not sure about 802.11 wireless Budget < $400, pref. less.

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• Archive Outlook mail items into SQL Server

  - by marc_s

  I am looking (and so far not finding any) for a solution to archive e-mail items from my Outlook into SQL Server. My PST is beginning to get really really big, and I'd love to extract my older e-mail into SQL Server in a way so I can still easily find mails if needed. I would prefer SQL Server as the storage medium since I'm familiar with it, and it's rock solid - I don't want to have a collection of PST files or CHM files or anything like that. Does anyone know of such a solution? I'm a power/home user - I can't afford $5'000 enterprise licenses - I need a sub-$100 solution for private use.

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• Calculating IOPS for a single HDD - what am I doing wrong?

  - by red888

  So I know there is no standardized way of calculating IOPS for a HDD, but from everything I have read it appears one of the most accurate formulas is the following: IOP/ms = + {rotational latency} + ({block size} / {data transfer rate}) Which is IOs per millisecond or what the book I've been reading calls "Disk Service Time". Also rotational latency is calculated as half of one rotation in milliseconds. This was taken from the EMC book "Information Storage and Management" -arguably a pretty reliable source right\wrong? Putting this formula into practice consider this Seagate data sheet. I am going to calculate IOPS for the ST3000DM001 model for a block size of 4kb: Seek Average (Write) = 9.5 -I'll measuring IOPS for writes Spindle speed = 7200rpm Average Data Rate = 156MB/s So my variables are: Seek Time = 9.5ms Rotational latency = (.5 / (7200rpm / 60)) = 0.004s = 4ms Data Rate = 156MB/s = (0.156MB/ms / 0.004MB) = 39 9.5ms + 4ms + 39 = IO/ms 52.5 1 / (52.5 * 0.001) = 19 IOPS 19 IOPS for this drive clearly is not right so what am I doing wrong?

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• How can I improve performance over SMB/CIFS for an application that has poor write speeds?

  - by Jeremy

  I have a third party application that reads several large files and generates a third large file. Its performance is quite good when the generated file is stored on "local storage", i.e. either a direct attached or iSCSI-based disk. The source files that are read can be stored remotely on our NAS and accessed via SMB with little effect on performance. However, if we attempt to write the target file to any kind of SMB/CIFS share (Samba or Windows Server) the performance drops almost ten-fold. This is unacceptably slow in our case. Writing files to network shares is not otherwise slow. I can copy large files to SMB shares and get great performance - near what I would expect is possible given the disks and network in question. I have a theory that this application's problem with SMB shares has something to do with a lack of write caching over the share and perhaps lots of network roundtrips. Is this possible and is there anything that can be done about it?

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• Win 7 Explorer backup and long paths

  - by user53299

  I use Explorer to do backups because Win 7's backup program asks me to take backups previously done and to put them back in the drive. I am opposed to that idea since I believe backups should remain in storage. With Explorer backups (burn and burn to disc) I have encountered the "destination path too long" error message and it shows the name of a folder "Debug" three times. I have hundreds of folders named "Debug" thanks to Visual Studio. At this moment I'm too angry at Microsoft to write a program to determine my 3 longest paths. (Aside: This is all after coincidentally reading two articles about path junctions earlier this evening which already made me kind of unhappy.) Please, is there an easy way to continue to make backups with Explorer? Edit: I should add that renaming paths wrecks Visual Studio projects so I really need to isolate the small number of problem paths or find a cleaner solution.

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• Optimal Configuration for five 300 GB 15K SAS Drives

  - by Bob

  I recently acquired an HP Z800 workstation that has five 300 GB 15K SAS Drives. This system will be dedicated to running multiple virtual machines under VMware Workstation (Note: I'm not using ESXi because I do plan to use the system for other purposes.). For the host OS, I plan to install RHEL 5. My number one concern is guest performance. For example, should I create a RAID 10 array for the OS and virtual machine storage with four of the drives and reserve the 5th? Or, is there a solution that will provide better performance?

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