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• Any recommendations on a NAS for a home-super-user?

  - by marc_s

  Can anyone recommend a good NAS for use in a home-server environment? I would request at least 2, preferably 4 disks, and I am most interested in good to excellent throughput for file-server and backup purposes - don't need any of the fancy media-streaming or -sharing features, that's not of interest to me. For a 4 or more disk solution, support for the various RAID levels (0, 1, 1+0, 5) would be a plus - especially if supported in hardware (rather than just a software emulation). I just need a place to put my collection of data, ISO images, and so forth - and since several external disks (self-built and off-the-shelf) have failed so far, I'm looking into a more reliable solution. Marc

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• How can I too many files upload more fast way to Cloud files in Rasckspace?

  - by andy kim

  I have a lot of image files, it's all I want to upload to RackSpace cloud files about a million in a single directory the fastest and most efficient way. but I'm use uploading python-cloudfiles script is very slow and I want to know different ways or python script code. because one by one connection upload is very slow. I think one files tar and uncompress directory is better way. but cloudfiles do not support this way. Who know any other way?

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• I need to clear out my Itunes library

  - by YsoL8

  Hello My itunes library is being a space hog and I need to transfer unused files to an external hard-drive and/or compress them. Can someone tell me if: a. that's possible b. if itunes will play media on an external hard-drive c. where itunes stores files(most of my stuff is from the itunes store). Thanks!

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• Starting scheduled task by detecting connection of USB drive

  - by gemisigo

  I know it has been discussed before several times that it is not possible to start an application from an usb drive when connecting it due to limitations of autorun (or autoplay??) in Win 7. But it is possible to create a scheduled task having On an event type trigger and surely there must be an event occurring when the drive is connected. Does anybody have the slightest idea which Event ID should I use? Or at least what type of event? There are too many logs to pick from.

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• Do you lose everything when you have a hard disk failure in a multi-hard disk LVM that does NOT use RAID?

  - by user72630

  I'm debating about using LVM for a media/file server because I would like to combine multiple physical hard disks into one volume. I do not wish to use any RAID in my LVM so my question is: If one of the multiple hard disks in my volume were to go down would I lose all my data or would I just lose the data that was stored on that individual disk? Also, if I were to just lose the data on the individual disk, would it be as simple as replacing that disk and restoring what was on it from a backup to recover? Thanks everyone.

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• Replicate a big, dense Windows volume over a WAN -- too big for DFS-R

  - by Jesse

  I've got a server with a LOT of small files -- many millions files, and over 1.5 TB of data. I need a decent backup strategy. Any filesystem-based backup takes too long -- just enumerating which files need to be copied takes a day. Acronis can do a disk image in 24 hours, but fails when it tries to do a differential backup the next day. DFS-R won't replicate a volume with this many files. I'm starting to look at Double Take, which seems to be able to do continuous replication. Are there other solutions that can do continuous replication at a block or sector level -- not file-by-file over a WAN?

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• All items in my pen drive had been renamed automatically and cannot open it

  - by pabz

  All the items (both files and folders) inside my pen drive had been renamed to some characters like :]h.¡?.A++ and when I try to open any folder Windows gives this message. The filename,directory name, or volume label syntax is incorrect I was told that it is a problem of the pen drive, not a virus. They say if I format the pendrive then I will be able to use it again normally. But I'm not sure. And I need those files. Does anybody knows a solution?

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• Using Dropbox API instead of a FTP server.

  - by Somebody still uses you MS-DOS

  This is a small aplication scenario. Usually, when you have to do some backups of source code/database on your server, you use a second ftp server, a cronjob to tar.gz your db dumps and source files, and send this file to your ftp server from your application server. Dropbox created an API to use it's infrastrucutre. Since they provide 2gb for free accounts, I thought about being able to upload to it instead of a ftp server. So, if you do some freelance work, you can create a free account for each client and use this approach, maybe encrypting the files you send. You even gain a revision for each sent file, like a revison control system, for free, from the last 30 days. What do you think of this approach? Is it possible? And, more importantly: what are the security risks involved? (That's why I'm asking this on serverfault, since this POV from sysadmins will be more accurate). Thanks!

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• How to "eject" non-existing USB drive from Windows 7 host?

  - by gencha

  I use a USB key which is encrypted with BitLocker to store various data. I keep that key with me all the time. What happens all the time is that I send my home computer to hibernate without ejecting the USB key first. Then I unplug the key and take it with me to work. When I get home, I resume my Windows session and even though the key is not plugged in, the drive still appears as mounted on the system. I can also unmount the non-existing device with mountvol, but that only removes the drive letter. Windows will still think the device is plugged in. When I plug the key in, nothing happens. The device's class ID is listed in mountvol output, but the device is not listed in the Disk Management panel.

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• What happened to WinFS?

  - by Console

  The most interesting feature that was ever connected to what eventually became Vista was WinFS, a revolutionary (so it seemed, at least back then) new way of storing and accessing information on a computer. This feature was cut despite actually reaching a closed alpha/technical preview release. There was a smoke and mirrors blog post from MS about the technology living on in an upcoming SQL server release, but to me it just felt like it was axed, hard. Does anyone have any idea what happened to it? Is it killed, or just on the backburner? Was it just impossible to implement, too expensive, or did someone think of a better idea? Are there any projects (From MS or anyone else) that have similar goals?

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• Do 7.2k SATA drives and a hardware raid controller always end with trouble?

  - by xelco52

  I'm reading the FreeNAS userguide and came across the statement: Note that hardware RAID configured as JBOD may still detach disks that do not respond in time; and as such may require TLER/CCTL/ERC-enabled disks to prevent drive dropouts. I'm using a '3Ware 9550SX-8LP RAID Controller' and see quite a few stories of people successfully running raid5 on 7.2k consumer SATA drives without issue. Are detached disks only a theoretical problem, or should I expect this to be a common occurrence?

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• How to wipe free disk space in Linux?

  - by Alex B

  When a file is deleted, its contents may still be left in the filesystem, unless explicitly overwritten with something else. "wipe" can securely erase files, but does not seem to allow erasing free disk space not used by any files. What should I use to achieve this?

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• Adding new virtual disks to a Windows host in ESX “live”

  - by warren

  Building on my previous question about RHEL, how do you add get the guest OS to recognize that you've added new drives to it without a reboot? I have Windows 2003, XP, and 2008 guests running on ESX 4. I've added new virtual disks to the VM, but have not figured-out how to get the guest to recognize them without a reboot. Is this possible? If so, how?

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• How can I improve these online java programming puzzles I wrote for my (middle/high school) students?

  - by Arcymag

  I'm teaching some middle and high school students programming right now, and I found that some of them really liked online programming puzzles. So I created http://www.kapparate.com/coder/ , and right now there's 4 categories of puzzles. All the puzzles are set up right now so that variables are pre-initialized, and the user plugs in some code in the middle. For example, the problem might say these are pre-initialized: int x = ????; int y = ????; int z; and then the program might ask the student to write the final line of code: z = x + y;. Now I know I could go a long way in improving the usability of this site (like having an area that lists the pre-defined variables), but I was wondering if this concept seems sound. I know some sites have kids fill in functions, but not all of my students know what functions are yet, and I'm trying to introduce online programming puzzles before that.

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• Putting and configuring grub on an external drive

  - by HisDudeness

  I want to put a bunch of minor emergency operating systems (such as GParted Live, DSL, Puppy Linux and so on) on a partitioned USB pen drive, with a dedicated grub boot loader on it, which I want to start when I select the drive in the BIOS to boot. The problem is: when writing grub boot options I must tell where kernel and initial ram files are located, but the USB drive can have different letters depending on when I did plug it in, if some others external drive were mounted. So, how can I write appropriate options which automatically refer to the drive grub is installed on without having to specify absolute paths, which might change (I mean, like (hd1,msdos1) ot /dev/sdb1)? And, while we are at it, can I have grub working on a device without an operating system on it to which it can refer? I mean, I want to address the command sudo grub-install /dev/sdb from the LMDE system I'm on right now, but I won't have LMDE on my pen drive. Is that a problem? And installing grub on another device, will I keep the grub I have right now on my HDD?

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• Debian - Problems Unmounting External Hard Drives

  - by user331981

  I recently installed Debian Testing on a new laptop and I just noticed that I am having some issues with unmounting external hard drives. I am using Mate Desktop 1.8.1. With the 1st drive, if I right click on the drive and select “safely remove”: The drive unmounts, spins down, immediately spins back up an remounts. Unable to unmount. With the 2nd drive, if I right click on the drive and select “safely remove”: The drive unmounts but does not spin down. With the 3rd drive, if I right click on the drive and select “safely remove”: The drive unmounts but does not spin down, immediately spins back up but does not remount, and after 20 seconds, it spins down and stays that way. Behavior is the same on both USB 2.0 and USB 3.0 ports. On my last laptop, on which I also used Debian Testing + Mate desktop, the safe removal of drives worked out of the box and I never had an issue with it. The drives would unmount, spin down and stay that way. To remount the drive, one needed to unplug the device and plug it back in. I am unsure how to troubleshoot this issue and I am not sure if it is merely a matter of installing a “missing” package of editing a config file. Thank you in advance.

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• Is data=journal on a separate device on Ext4 as good as using a RAID controller with battery backed cache for file system consistency?

  - by Jeff Strunk

  It seems to me that data=journal prevents file system inconsistency in the case of power failure. Using it with a dedicated journal device mitigates the performance penalty of writing the data twice. A power outage would still lose the data that is currently being written to the journal, but the file system on disk would always be consistent. If that amount of loss is acceptable, is a RAID controller with battery backed cache really worthwhile?

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• Our company has 100,000s+ photos, how to store and browse/find these efficiently?

  - by tobefound

  We currently store our photos in a structure like this: folder\1\10000 - 19999.JPG|ORF|TIF (10 000 files) folder\2\20000 - 29999.JPG|ORF|TIF (10 000 files) etc... They are stored on 4 different 2TB D-link NASes attached and shared on our office network (\\nas1, \\nas2, and so on...) Problems: 1) When a client (Windows only, Vista and 7) wishes to browse the let's say \\nas1\folder\1\ folder, performance is quite poor. A problem. List takes a long time to generate in explorer window. Even with icons turned off. 2) Initial access to the NAS itself is sometimes slow. Problem. SAN disks too expensive for us. Even with iSCSI interface/switch technology. I've read a lot of tech pages saying that storing 100 000+ files in one single folder shouldn't be a problem. But we don't dare go there now that we experience problems on a 10K level. All input greatly appreciated, /T

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• Software Raid1 with Trim

  - by Penetal

  I have two Crucial C300 SSD disks that I would like to use as my OS disks in my new home server. I have read around a little and some places say that TRIM is simply not supported on any raid config, hw or sw. Then on some other sites I have seen that new support have come for SW raid via LVM somehow, and this is what I'm curious to know about. Can I get Raid 1 and still have TRIM enabled on SW raid by abstracting it with LVM or in any other way? I will most likely be using either Debian or CentOS.

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• Clean Install Windows on a Acer Aspire Laptop with a Hybrid Drive

  - by user1325179

  I'd like to do a clean install of Windows 8 on my Acer Aspire laptop (Aspire M5-481PT) with a hybrid drive. Physically, there seem to be two hard drives (an HDD and an SSD). So when I try to clean install Windows, I am asked to pick a drive. The HDD has five partitions (some seem to be recovery related), and the SSD has two partitions. Which partitions should I delete (if any), and onto which drive should I install Windows 8? And then how can I instruct Windows 8 to use the HDD-SSD combination as a hybrid drive? Edit: Currently, the operating system seems to be installed (from the factory) on the HDD. The SSD is invisible in File Explorer. It is only visible in disk utilities. I'm betting I need to install Windows to the HDD, and then point Windows to use the SSD for the hybrid relationship. Also, the SSD is about 20 GB. The HDD is about 450 GB.

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• Using Dropbox API instead of a FTP server for backing up DB/Source in your application.

  - by Somebody still uses you MS-DOS

  This is a small aplication scenario. Usually, when you have to do some backups of source code/database on your server, you use a second ftp server, a cronjob to tar.gz your db dumps and source files, and send this file to your ftp server from your application server. Dropbox created an API to use it's infrastrucutre. Since they provide 2gb for free accounts, I thought about being able to upload to it instead of a ftp server. So, if you do some freelance work, you can create a free account for each client and use this approach, maybe encrypting the files you send. You even gain a revision for each sent file, like a revison control system, for free, from the last 30 days. What do you think of this approach? Is it possible? And, more importantly: what are the security risks involved? (That's why I'm asking this on serverfault, since this POV from sysadmins will be more accurate). Thanks!

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• Windows shows incorrect free space on Raid 10 volume

  - by Adenverd

  I have 4 1TB hard drives in RAID 1+0 configuration. Theoretically, I should have ~2TB of available space. Windows says the drive has a total size of 1.81 TB, which I'm fine with. As far as files on the volume go, I used WinDirStat to determine that I have 552.8GB of files on the volume. This means that I should have somewhere around 1.3TB minimum of free space. Yet Windows shows the drive as only having 492GB of free space. Are there hidden files somewhere that I can't see (I have show hidden files/folders turned on)? Does Windows not recognize that old files have been deleted? Is there any way to correct this problem?

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• Store passwords in putty

  - by Quintin Par

  How can I store my connection passwords in putty?

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• How can I tell if my hard drive(s) have Battery Backed Write Cache?

  - by Riedsio

  How can I tell if my hard drives have a battery backed write cache (BBWC)? How can I tell if it is enabled and/or configured correctly? I don't have physical access to my server. It's a GNU/Linux box. I can provide supplemental incremental information/details as requested. My frame of reference is that of a DBA -- I have access and privileges, but (usually) only tread where I know am supposed to. :)

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• Raidz in FreeNAS eating more space than expected

  - by swood

  I just got 6 new 2TB drives, and added them to my FreeNAS box. I have only dealt with RAID1 previously, and each setup has given what I was expecting. However, with the 6*2TB drives, I wanted to maximize the space available, so I went with raidz. But I seem to be missing space. I have 8.6TB available after the raidz was built. Maybe I did my math horribly wrong, but (N-1) x S(min) (where N=6 and S(min)=2TB) should result in 10TB. (I understand it would be more like 9.something) Does raidz actually consume more then 1 drive worth of space? Or could their possibly be another problem? (All drives have been independently verified that 2TB of space is available)

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