Search Results

Search found 3461 results on 139 pages for 'drives'.

Page 36/139 | < Previous Page | 32 33 34 35 36 37 38 39 40 41 42 43  | Next Page >

• Simple P2V help from Linux to Windows

  - by Ke.

  I have two OS's installed on different drives in my PC. One linux (Centos 5.4) and one windows 7. Its getting tiresome to constantly have to stop and restart the PC when I want to use either OS. I would very much like to use Windows 7 as my host OS and access my linux OS from within Windows. However, im having trouble deciphering exactly how to do this (many of the articles seem confusing and a bit overkill) From what i have seen its possible to use VMWare converter to convert the physical linux image to a virtual image so that I can use it in windows. As im having problems understanding how this is done, I would really appreciate a step by step guide (for a newbie), or any simple tutorials that you can point me at. Some questions beforehand: 1) My linux image is around 80gb, do i need to take this into consideration? The linux drive is around 180gb in total. All my other drives are NTFS non writeable in linux (as I use them in windows and ntfs is dodgy in linux), so probably not possible to move the image over to my ntfs drives 2) Can I just zip the linux files up somehow and transfer it to windows to create the p2v? 3) Is it possible to do the P2V conversion while I am logged into windows. I can see the actual linux drive loaded in disk manager, but windows doesnt read linux file systems so im confused as to how to access the linux drive if this is possible. 4) Or will i need to do the whole p2v conversion inside linux? Cheers, any help is much appreciated Ke (a confused p2v newbie)

  Read the article

• RAID 5 - DELL 2850 and others

  - by Kiara

  I have installed Ubuntu on a DELL 2850 and I have configured an array of 5 disks (SCSI 73GB 10K) in RAID5. I wanted to simulate a drive error so in the middle of something I just took one of the drives out and put it back again after a bit. Then the drive shows an orange light and seems to be rebuilding but actually is taking hours and hours with no results. So I went to the PERC utility (Ctrl+M) and the disk shows "REBLD". But it never gets to an online state. So I went to Objects - Physical drives - Rebuilding - View rebuild process. And in here I can see a bar moving from 0%... but if I reboot before finishing and get into the PERC Utility again, it seems to start again rebuilding from 0% - so it is not rebuilding automatically. My concern is: what would happen in a real situation? Do I have to just switch the server off and go to the Perc utility to start the rebuilding manually? I thought the whole point was to have this done automatically and without the need of stopping the server. Or does it perhaps rebuild automatically indeed but needs to have enough time without rebooting because otherwise the rebuilding process will start from scratch? It seems to take more than 3h for a 73gb disk! My second question is: can I mix then hard drives? So if I have a RAID of 5x73GB 10K can I use different size (146GB) or speeds (15K)? Apparently someone said it is OK in here Poweredge 2850: replace disk with larger in RAID?

  Read the article

• Mounting 2.5" SSD in Antec Atlas 550's 3.5" bay

  - by cecilkorik

  Just got some new SSDs to add to my servers, unfortunately there doesn't appear to be anywhere to actually mount them. The cases are Antec Atlas 550 mid-tower server cases. The problem is that the 3.5" bays are intended for 3.5" hard drives (obviously) not SSDs, so they are mounted from the bottom with rubber grommets to reduce vibration. There are NO side-holes in any of the 3.5" bays, all mounting has to be done from the bottom of the drive, through the thick rubber grommets, which requires special extra-long screws with large heads. Those screws will not work with the SSD, the thread is too coarse, 2.5" drives apparently use M3 screws with a finer pitch. The case's 3.5" bays have holes aligned for 2.5" drives and by moving the grommets into the appropriate holes they line up with the SSD. But that's as far as I can get. I don't have and cannot find any screws that use the finer M3 pitch that are long enough and have the wide head. I can't remove the grommets because the screw holes are much too wide without them, the entire head of the screw fits through. And again, there are no side-holes, so I can't use the mounting bracket that came with the drive nor any other 2.5"-3.5" bracket I've found. Here is a pic of what I am dealing with (note that the SSD is just resting on the case, it's not currently screwed in if that's not clear) Any ideas for safely mounting these little guys without resorting to duct tape or superglue would be very appreciated. If anyone knows where I could buy the appropriate type of M3 threaded screw or has any other ideas please help me out here.

  Read the article

• Server 2003 crashing intermittently, want to transfer function to other DC

  - by user1305332

  I have a Win2003R2 server that is intermittently crashing after some virus were introduced. I'm sure all virus have been cleaned thanks to Malwarebytes (were using McAfee - useless). When it crashes you can't login (local or remote) but can still access files remotely and ping it. After a while even file sharing stops and have to kill power to restart it (no BSOD) I need to either fix it (tried to reinstall SP2 and I tried to reinstall windows in repair mode but the repair option was not available when I booted from installation disks) or move it's functionality to another DC (another 2003R2 server). The server that's crashing is old with SCSI drives while the new server uses SATA drives and faster so it seems like a good idea to just transfer roles and ditch the old box. Finding replacement SCSI drives looks expensive if they ever fail. What would I need to transfer roles. If I just move the 5 FSMO roles and copy over the file shares. Would the new server have enough to run without the old server? Never done something like this, just want some tips. Thanks.

  Read the article

• Simple P2V help from Linux to Windows

  - by Ke

  Hi, I have two OS's installed on different drives in my PC. One linux (Centos 5.4) and one windows 7. Its getting tiresome to constantly have to stop and restart the PC when I want to use either OS. I would very much like to use Windows 7 as my host OS and access my linux OS from within Windows. However, im having trouble deciphering exactly how to do this (many of the articles seem confusing and a bit overkill) From what i have seen its possible to use VMWare converter to convert the physical linux image to a virtual image so that I can use it in windows. As im having problems understanding how this is done, I would really appreciate a step by step guide (for a newbie), or any simple tutorials that you can point me at. Some questions beforehand: 1) My linux image is around 80gb, do i need to take this into consideration? The linux drive is around 180gb in total. All my other drives are NTFS non writeable in linux (as I use them in windows and ntfs is dodgy in linux), so probably not possible to move the image over to my ntfs drives 2) Can I just zip the linux files up somehow and transfer it to windows to create the p2v? 3) Is it possible to do the P2V conversion while I am logged into windows. I can see the actual linux drive loaded in disk manager, but windows doesnt read linux file systems so im confused as to how to access the linux drive if this is possible. 4) Or will i need to do the whole p2v conversion inside linux? Cheers, any help is much appreciated Ke (a confused p2v newbie)

  Read the article

• How to let hard drive sleep in RAID1 configuration?

  - by Al Kepp

  Normally in Windows 7 a hard drive stops spinning when it is not used for a longer while. This can be configured in Windows and I use it on computers which are turned on 24/7 but not used much often. My problem is on a computer with Intel X79 chipset with an integrated RAID controller. There is Windows 7 installed on an SSD drive, and there is RAID1 array with two SATA HDD drives for data. Those SATA drives aren't used much so I'd like to let them sleep (i.e stop spinning). But they ignore settings in Windows. How to let them sleep when using RAID1? It seems to me that those drives are "unstoppable", they are spinning 24/7 even when they aren't used at all. Maybe they would behave normally if I used Windows-based software RAID, but I use hardware RAID controller. Is there a way to let them stop spinning and sleep after for example 3 or 5 hours of inactivity (i.e. the same way as they would behave in Windows without RAID)?

  Read the article

• Very poor SCSI hd performance on IBM x336 with LSI 1030 RAID1

  - by David Tschoepe

  I'm experiencing very poor performance on an IBM x336 server with dual 73GB 15k hard drives on a U320 controller, LSI 1030. We're getting maybe 3.5MB/sec max (per HD Tune utility). It should be over 100MB/sec at least, I would think (another x335 box is running 70-80MB/sec). The server was recently setup and didn't really notice the problem, but may have been there from the beginning, so not sure. I have installed the IBM ServerRAID Windows utility. The server is running Windows 2008 R2 Web edition (if that matters). I thought maybe one of the drives was bad, so far I have removed one of the drives out of the array and tested again, but still the same results. I'm waiting for the RAID1 to resync and I will try pulling the other drive next. I've also used the ServerRAID utility but haven't noticed anything in there that might indicate a problem. Not sure if I'm on the right path here. So looking for some advice to track this down.

  Read the article

• Slow parity initialization of RAID-5 array on HP Smart Array 411 controller

  - by Rob Nicholson

  On 29th October 2011, I built a RAID-5 array using 4 x 146.8GB Seagate SAS ST3146855SS drives running at 15k connected to a PowerEdge R515 with HP Smart Array P411 controller running Windows 2008 (so nothing particularly unusual). I know that parity initialisation of a RAID-5 array can take some time but it's still running after 2.5 weeks which seems a little unusual. I'd previously built another array on the same controller using 4 x 2TB SATA-2 drives and that did take a while to complete but a) I'm sure it was less than 2.5 weeks, b) that array was ~12 times bigger and c) during initialization, the percentrage slowly increased each day. At the moment, the status display for this new 2nd array simply says "Parity Initialization Status: In Progress" and it's said that since the start. It's this lack of change on the status that worries me the most - feels like it's not actually doing anything. Do you think something has gone wrong or am I being unpatient and for some reason, the status not increasing is normal? I kind of expected a much smaller array on faster drives (15k SAS versus 7.5k SATA-2) to build in a few days. This is our primary SAN running StarWind so my "have a play" options are very limited. This 2nd array is currently in use for one small virtual disk so I could shut the target machine down, move the virtual disk to another drive and try rebuilding.

  Read the article

• Windows Home Server installation fails because it can't find the DVD drive anymore

  - by BBlake

  I've got an old Dell Dimension 8300 desktop I decided to convert into a WHS box. I popped in a pair of 1 TB SATA drives, which were recognized fine by the BIOS and the currently installed OS (XP), so I decided to go ahead and install WHS. Near the end of the installation, WHS acts like it can no longer find the DVD drives (either of them, the box has a DVDROM and a DVDRW). The specific error is gives is the "Can't configure storage" error. I've found several forums where people say they get this error if they remove the boot DVD during the installation (at the time of the first reboot). However, I never removed the DVD. After the error, if fails into WHS, so it did mostly install and I can work with WHS. However, it refuses to recognize the network card, video card and while it shows the two DVD drives, any CD/DVD I insert in either drive the system says is corrupted and unreadable, even though none of them are. I've tried several reinstalls both removing and not removing the DVD, but the result is the same regardless. Any other tricks anyone found? If I can't figure this out, maybe I'll just install SBS2008 and fake it up to be similar to WHS with some addin tools. Shouldn't be too hard to create something since WHS is based on SBS2003 anyway.

  Read the article

• Identifying Hard Drive as performance bottleneck for desktop machines

  - by Programming Hero

  I'm working in a development team where we all use laptops so we can work in multiple locations. These laptops are proving notoriously slow for development work, but at a glance they all look to have the specification for a much faster experience: CPU - Intel Core 2 Duo T7500 Memory - 2GB of RAM We all experience the biggest delays when the hard-drives are being accessed, particularly when swap-files are being thrashed. After doing a little bit of profile, a colleague discovered that our HDDs are seeing Read/Write speeds of about 10MB/sec. This seems abnormally low and we believe it the cause of the problem. Sensibly (though somewhat annoyingly) our business wont blow money on faster drives just to see if it fixes the problem; we need to illustrate this is definitely the problem and that buying some solid-state drives will make it go away. I need some way of showing how 90% of the system resources aren't being used over the course of a day, and that whenever there is utilization, it's all in HDD reads or writes. Are there any tools I could use to provide this information? Does it seem likely the problem is going to be fixed by a faster drive? Should I be looking for alternatives?

  Read the article

• filesystem compatible with freenas and windows

  - by Daniel

  Hi all, I'm planning on using FreeNAS (was considering openfiler but freenas seems simpler) for my home NAS box running off ESXI. I have managed to get local sata drives to mount in ESXI (http://serverfault.com/questions/216902/esxi-add-datastore-without-partitioning). I've had one of the drives fail on my before and I was able to retrieve most of the data off it using windows tools (I'm not much of a linux guy I know enough to be dangerous!). If I go the freenas route in the event that something goes bad what would be the best file system to use so that I could pop the drive out of the freenas box (vm) and put it in another pc running windows so I could try and run various recovery tools to get the data back. All in all its not a major problem if I lose the data just would be a bit annoying, so I'm not looking for suggestions around backing up etc. I was considering using NTFS that the drives are already formatted as but it appears that while freenas does support NTFS that its a bit buggy and not 100% reliable, anyone know if this is still true? Read that on a forum somewhere.

  Read the article

• How do hdparm's -S and -B options interact?

  - by user697683

  These two options seem confusing. For example: according to the man page -B 254 "does not permit spin-down". However, testing with -B 254 -S 1 the drive does spin down after 5 seconds. -B Query/set Advanced Power Management feature, if the drive supports it. A low value means aggressive power management and a high value means better performance. Possible settings range from values 1 through 127 (which permit spin-down), and values 128 through 254 (which do not permit spin-down). The highest degree of power management is attained with a setting of 1, and the highest I/O performance with a setting of 254. A value of 255 tells hdparm to disable Advanced Power Management altogether on the drive (not all drives support disabling it, but most do). -S Put the drive into idle (low-power) mode, and also set the standby (spindown) timeout for the drive. This timeout value is used by the drive to determine how long to wait (with no disk activity) before turning off the spindle motor to save power. Under such circumstances, the drive may take as long as 30 seconds to respond to a subsequent disk access, though most drives are much quicker. The encoding of the timeout value is somewhat peculiar. A value of zero means "timeouts are disabled": the device will not automatically enter standby mode. Values from 1 to 240 specify multiples of 5 seconds, yielding timeouts from 5 seconds to 20 minutes. Values from 241 to 251 specify from 1 to 11 units of 30 minutes, yielding timeouts from 30 minutes to 5.5 hours. A value of 252 signifies a timeout of 21 minutes. A value of 253 sets a vendor-defined timeout period between 8 and 12 hours, and the value 254 is reserved. 255 is interpreted as 21 minutes plus 15 seconds. Note that some older drives may have very different interpretations of these values.

  Read the article

• Best way to attach 96 tb to workstation

  - by user994179

  I'm running a workstation with dual xeon 5690's (12 physical/24 logical cores), 192 gb of ram (ie, maxed-out), Windows 7 64bit, 5 slots for adapter cards, and 1 tb of internal storage, with 5 more internal bays available. I have an app that creates data files totaling about 88 tbs. These are written once every 14 months, and the rest of the time the app only needs to read them; and 95% of the reads are sequential reads of huge chunks of data. I have some control over how big the individual files are, but ideally they would be between 5 and 8 tbs. The app will be reading from only one drive at a time, and the nature of the data is such that if (when) a drive dies I can restore the data to a new disk from tape. While it would be nice to be able to use the fastest drive/controllers available, at this point size matters more than speed. After doing lots of reading, I am leaning toward buying a bunch of cheap 2tb drives and putting them into a bunch of cheap enclosures. All this stuff is going into my home office, so I need to avoid the raised floor/refrigerated approach. My questions: Is the cheap drive/enclosure solution the best one for this situation? Given the nature of the app and the way the data is used, does RAID make sense? If so, which one? For huge sequential reads, would Usb 3.0 and eSata be a wash performance-wise? For each slot available on the workstation, can I hook up an enclosure that can hold multiple drives? Or is it one controller per drive? If I can have multiple drives on one controller, am I essentially splitting the bandwidth (throughput)? For example, if I have a 12 bay enclosure, is the throughput of the controller reduced by a factor of 12? Are there any Windows 7 volume/drive/capacity limits I should be aware of? Thanks

  Read the article

• linux hardware raid 10 / lvm / virtual machine partition alignment and filesystem optimization

  - by Jason Ward

  I've been reading everything I can find about partition alignment and filesystem optimization (ext4 and xfs) but still don't know enough to be confident in setting up my current configuration. My remaining confusion comes from the LVM layer and if I should use raid parameters on the filesystem in guest os'es. My main questions are: When I use 'pvcreate --dataalignment' do I use the stripe-width as calculated for a filesystem on RAID (128kB for ext4 in my situation), the Stripe size of the RAID set (256kB), something else altogether, or do I not need this? When I create ext2/3/4 or xfs filesystems in guests on the Logical Volumes, should I add the settings for the underlying RAID (e.g. mkfs.ext4 -b 4096 -E stride=64,stripe-width=128)? Does anyone see any glaring errors in my set up below? I'm running some benchmarks now but haven't done enough to start comparing results. I have four drives in RAID 10 on a 3ware 9750-4i controller (more details on the settings below) giving me a 6.0TB device at /dev/sda. Here is my partition table: Model: LSI 9750-4i DISK (scsi) Disk /dev/sda: 5722024MiB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1.00MiB 257MiB 256MiB ext4 BOOTPART boot 2 257MiB 4353MiB 4096MiB linux-swap(v1) 3 4353MiB 266497MiB 262144MiB ext4 4 266497MiB 4460801MiB 4194304MiB Partition 1 is to be the /boot partition for my xen host. Partition 2 is swap. Partition 3 is to be the root (/) for my xen host. Partition 4 is to be (the only) physical volume to be used by LVM (for those who are counting, I left about 1.2TB unallocated for now) For my Xen guests, I usually create a Logical Volume of the needed size and present it to the guests for them to partition as needed. I know there are other ways of handling that but this method works best for my situation. Here's the hardware of interest on my CentOS 6.3 Xen Host: 4x Seagate Barracuda 3TB ST3000DM001 Drives (sector size: 512 logical/4096 physical) 3ware 9750-4i w/BBU (sector size reported: 512 logical/512 physical) All four drives make up a RAID 10 array. Stripe: 256kB Write Cache enabled Read Cache: intelligent StoreSave: Balance Thanks!

  Read the article

• How would I force Debian to use the physical sector size on a hard disk?

  - by Confused User

  I just purchased a few new 3TB WD drives. These have physical 4k sectors, but there is some sort of layer which is providing 512B logical sectors (see the partition table below). In order to attempt to get some more speed out of my hard drives, I would like to get rid of this logical layer and actually use the physical 4k sectors. However, I can't figure out how to do this (or even if it's possible) from the man pages of fdisk and parted, or from searching Google. Does anybody know how this could be done? As to why this is relevant, this page demonstrates that meerly aligning the sectors properly can already make up to a 25% speed difference for reads, and more than 2500% for writes in some cases! Getting rid of the logical sectors in favor of the physicals ones should improve speeds even more. Thanks! $ parted /dev/sdc GNU Parted 2.3 Using /dev/sdc Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Model: ATA WDC WD30EZRX-00M (scsi) Disk /dev/sdc: 3001GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 3001GB 3001GB zfs 9 3001GB 3001GB 8389kB P.S. I don't care about the data on the drives, I was just playing with different file systems. Also, this is my first time posting here, so please let me know if my posts should be formatted differently, etc.

  Read the article

• Computer hangs at boot screen with new RAID card

  - by shanethehat

  I am trying to build a new server around a Biostar TH61 motherboard and an Adaptec 6405E RAID controller card. The machine booted fine from USB before the RAID card and drives were installed. After installing, on the first boot the card was detected, but then started to spit out the following message every 10 seconds: Error: Controller Kernel Stopped Running << Press any key to continue ... Following the troubleshooting guide I unplugged everything, reseated the card, and reattached all the drives. This time the machine is sitting on the boot screen without any error messages and flashing a cursor, but after 15 minutes of this, nothing seems to be happening. Given that there are no error messages I'm hesitant to reboot again. Is it normal for a RAID card to sit without a status message when it firsts boots, maybe to initialise the drives or something? The current screen output looks a bit like this: Controller #00 found at PCI Slot:01, Bus:01, Dev:00, Func:00 Controller Model: Adaptec 6405E Firmware Version: 5.2-0[18512] Memory Size: 128MB Serial number: 111111111111111 SAS WWN: 50000D1104AE9180 _ Update: So after waiting 30 minutes I've rebooted back to the Kernal Stopped Running error. Maybe time to update the RAID BIOS.

  Read the article

• How can I change the default location/action of 'Open Outlook Data File' in Outlook 2010?

  - by Chadddada

  I have recently deployed a Remote Desktop Host server that functions as a remote Microsoft Office 2010 work space for users. In part of the locking down of this server I have installed all programs on the D: drive and, through the use of Group Policy, hidden all the drives on the server from standard users. In addition to hiding these drives I am not allowing users to save anything locally (on the server) or open Libraries. However one of the functions of the server is to provide the Outlook client. Often users will have the .PST file stored on a network location and want to open this in Outlook. Can I change the default action or location that File Open Open Outlook Data File looks or tries to pull the file from? The default location seems to be under Users / Libraries. When click 'Open' you get a warning: This operation has been cancelled due to restrictions in effect on this computer. Clicking OK drops the user into a small menu that shows attached network drives under Computer. Can I instead have the 'Open' click drop the users in a defined network drive or just open computer and allow them to select a share? I don't want them to see the error message. A solution that looks to have been used for Office 2000/03 is: Key: HKEY_CURRENT_USER\Software\Microsoft\Office\<version>\Outlook Value name: ForceOSTPath Value type: REG_EXPAND_SZ Value: path to your storage folder I am not sure if there is a better way to do this now OR if this even works with Office 2010.

  Read the article

• Cannot set video resolution above 640x480 after installing Windows XP SP2

  - by waanders

  I've installed Windows XP SP2 on a computer (there was not SP at all). Now the display settings are set back to 640x480 and 4 bits colors. And I can't change it, it's the only option in Settings tab of the Display dialog of Windows. The screen look awful now, how can I solve this problem? UPDATE: Seems to be a problem with the video driver (thanks @Karan and @Hennes). I did run Speccy (PC-Wizard freezes the computer) and this is a part of the log file: Summary Operating System Microsoft Windows XP Professional 32-bit SP3 CPU Intel Celeron Willamette 0.18um Technology RAM 512 MB DDR @ 133MHz (2.5-3-3-6) Motherboard COMPAQ 0838h (FC-478) Graphics Standard Monitor (640x480@1Hz) Hard Drives 19.0GB Maxtor 2B020H1 (PATA) Optical Drives No optical disk drives detected Audio No audio card detected ... Graphics Monitor Name Standard Monitor on Current Resolution 640x480 pixels Work Resolution 640x450 pixels State enabled, primary Monitor Width 640 Monitor Height 480 Monitor BPP 4 bits per pixel Monitor Frequency 1 Hz Device \\.\DISPLAY1 OpenGL Version 1.1.0 Vendor Microsoft Corporation Renderer GDI Generic GLU Version 1.2.2.0 Microsoft Corporation Values GL_MAX_LIGHTS 8 GL_MAX_TEXTURE_SIZE 1024 GL_MAX_TEXTURE_STACK_DEPTH 10 GL Extensions GL_WIN_swap_hint GL_EXT_bgra GL_EXT_paletted_texture GL_EXT_bgra

  Read the article

• raid 0 data recovery?

  - by Fred

  HI All, I have two identical seagate 7200.9 500Gb drives confiured as a RAID 0 spanned disk in windows. One of the drives has lost power and wont spin up at all. I know this normally means death for the data on both drives but i have a cunning plan.. DISK 1 - NO POWER RAID 0 DISK DISK 2 - FULLY FUNCTIONAL RAID 0 DISK DISK 3 - FULLY FUNCTIONAL SPARE DISK Copy the working drive (disk 2) data to a third 500GB DISK (disk 3), remove the logic board from the working disk (disk 2) and replace it with the non working logic board on the broken drive (disk 1) , then hopefully recreate the RAID 0 with disk 1 and disk 3, just long enough to get the data off it. Hope this makes sense, here are my questions: Windows disk manager atm recognises disk 2 but wont let me access it in anyway, therefore copying the data off it (or getting a disk image) cant be done in windows. Does anyone know of any software (in linux or self booting) that would allow me to access this disk? Anyone know of any software that will recreate the spanned drive off two disk images Am i missing any key information that means i definitely shouldn't even bother starting this, i know its a long shot anyway but its worth a try unless i definitely cant do it. The irritating thing is that i am sure its a logic board failure on disk 1 as it simply wont power up at all, suddenly no signs of life, so i am sure the data is intact! Any help would be really appreciated! Thanks

  Read the article

• Solaris 10: How to image a machine?

  - by nonot1

  I've got a Solaris 10 workstation that I'd like to create a full image backup from. The machine has 2 drives, one UFS for system root, and 1 ZFS for data storage. I intend to add a third HD to keep the backup images of both primary drives (including any zfs snapshots). The purpose is not disaster recovery, but rather to allow me to easily blow away a series of application installation/configuration changes I intend to try. What's the best way to do this? I'm not too familiar with Solaris, but have some basic Linux knowledge. I looked at CloneZilla, but it does not support Solaris. I'm OK with just a dd | gzip > image style solution, but I'd need some way to first zero-out the non-used blocks on the primary drives to aid gzip. They are are much larger than my 3rd drive, but hardly have any real data. Update to clarify: I specifically want to avoid using any file-system snapshot functionality, because part of the app configuration changes involve/depend slightly on existing and new snapshots. Ideally the full collection of snapshots should be part of the backup. Virtualization not an option, because the goal is to do performance evaluation on a very specific HW configuration. For the same reason, the spurious "back up" snapshots could skew performance data. Thank you

  Read the article

• Preventing h/w RAID cards from dropping slow JBOD disks

  - by Kevin

  I'm considering buying a used SAS h/w RAID card for externally attaching HDDs to an HP ProLiant I'm setting up. However, I only require RAID functionality on some of the drives. Theoretically it should be simple to JBOD the other drives, but some of them are inexpensive SATA disks and probably cannot have TLER disabled. I'd like to know, prior to actually ordering a RAID card, whether typically RAID cards would still enforce dropping of disks that do not respond within a few seconds, even if the disk is in a JBOD, and whether there is any way to disable this. Ideally it would be nice to be able to select certain SAS ports that will be pass-through, bypassing the RAID engine entirely and just acting as an HBA for those ports. I know I could buy a separate SAS HBA but that seems like a waste of $ and is also impractical as it's a 1U server so space is extremely limited. My question then is whether the functionality I'm looking for (pass-through on certain ports or at least JBOD drives not getting themselves dropped due to slow response) is typical of proper h/w RAID cards such as PERC 5/E etc. I've browsed through the latter's manual but unfortunately, as with most user manuals, it states the obvious and doesn't state the unobvious. Thanks for any info, Kevin

  Read the article

• How to re-add a RAID-10 failed drive on Ubuntu?

  - by thiesdiggity

  I have a problem that I can't seem to solve. We have a Ubuntu server setup with RAID-10 and two of the drives dropped out of the array. When I try to re-add them using the following command: mdadm --manage --re-add /dev/md2 /dev/sdc1 I get the following error message: mdadm: Cannot open /dev/sdc1: Device or resource busy When I do a "cat /proc/mdstat" I get the following: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [r$ md2 : active raid10 sdb1[0] sdd1[3] 1953519872 blocks 64K chunks 2 near-copies [4/2] [U__U] md1 : active raid1 sda2[0] sdc2[1] 468853696 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdc1[1] 19530688 blocks [2/2] [UU] unused devices: <none> When I run "/sbin/mdadm --detail /dev/md2" I get the following: /dev/md2: Version : 00.90 Creation Time : Mon Sep 5 23:41:13 2011 Raid Level : raid10 Array Size : 1953519872 (1863.02 GiB 2000.40 GB) Used Dev Size : 976759936 (931.51 GiB 1000.20 GB) Raid Devices : 4 Total Devices : 2 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Thu Oct 25 09:25:08 2012 State : active, degraded Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Layout : near=2, far=1 Chunk Size : 64K UUID : c6d87d27:aeefcb2e:d4453e2e:0b7266cb Events : 0.6688691 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 0 0 1 removed 2 0 0 2 removed 3 8 49 3 active sync /dev/sdd1 Output of df -h is: Filesystem Size Used Avail Use% Mounted on /dev/md1 441G 2.0G 416G 1% / none 32G 236K 32G 1% /dev tmpfs 32G 0 32G 0% /dev/shm none 32G 112K 32G 1% /var/run none 32G 0 32G 0% /var/lock none 32G 0 32G 0% /lib/init/rw tmpfs 64G 215M 63G 1% /mnt/vmware none 441G 2.0G 416G 1% /var/lib/ureadahead/debugfs /dev/mapper/RAID10VG-RAID10LV 1.8T 139G 1.6T 8% /mnt/RAID10 When I do a "fdisk -l" I can see all the drives needed for the RAID-10. The RAID-10 is part of the /dev/mapper, could that be the reason why the device is coming back as busy? Anyone have any suggestions on what I can try to get the drives back into the array? Any help would be greatly appreciated. Thanks!

  Read the article

• Raid 5 with hot spare or RAID 10 with no hot spare?

  - by Boden

  Yes, this is on of those "do my job for me" questions, have some pity:) I'm at the limit for what I can do with the number of hard drives in a server without spending a substantial amount of money. I have four drives left to configure, and I can either set them up as a RAID 5 and dedicate a hot spare, or a RAID 10 with no hot spare. The size of each will be the same, and the RAID 5 will offer enough performance. I'm RAID 5 shy, but I also don't like the idea of running without a hot spare. I'm not so interested in degraded performance, but the amount of time the system is without adequate redundancy. The server and drives are under a 13x5 4 hour response contract (although I happen to know that the nearest service provider is at least 2-3 hours away by car in the winter). I should note that the server also has two RAID 1 arrays which would also be protected by the hot spare. Why don't they make drive cages with 9 bays! Heh.

  Read the article

• What is the best private cloud storage setup

  - by vdrmrt

  I need to create a private cloud and I'm searching for the best setup. These are my 2 most important requirements 1. Disk and system redundant 2. Price / GB as low as possible The system is going to be used as backup setup which will receive data 24/7 over SFTP and rsync. High throughput is not that important. I'm planning to use glusterfs and consumer grade 4TB hard-drives. I have worked out 3 possible setups 3 servers with 11 4TB HDD Setup up a replica 3 glusterfs and setup each hard drive as a separate ext4 brick. Total capacity: 44TB HDD / TB ratio of 0.75 (33HDD / 44TB) 2 servers with 11 4TB HDD The 11 hard-drives are combined in a RAIDZ3 ZFS storage pool. With a replica 2 gluster setup. Total capacity: 32TB (+ zfs compression) HDD / TB ratio of 0.68 (22HDD / 32TB) 3 servers with 11 4TB consumer hard-drives Setup up a replica 3 glusterfs and setup each hard-drive as a separate zfs storage pool and export each pool as a brick. Total capacity: 32TB (+ zfs compression) HDD / TB ratio of 0.68 (22HDD / 32TB) (Cheapest) My remarks and concerns: If a hard drive fails which setup will recover the quickest? In my opinion setup 1 and 3 because there only the contents of 1 hard-drive needs to be copied over the network. Instead of setup 2 were the hard-drive needs te be reconstructed by reading the parity of all the other harddrives in the system. Will a zfs pool on 1 harddrive give me extra protection against for example bit rot? With setup 1 and 3 I can loose 2 systems and still be up and running with setup 2 I can only loose 1 system. When I use ZFS I can enable compression which will give me some extra storage.

  Read the article

• BIOS and Windows cannot detect CDROM device

  - by eman

  Hello! I have a HL-DT-ST RW/DVD GCC-4521B dvdrom device and a big problem. Some days ago everything worked fine. A friend installed some software and then the drives in winxp has been marked as corrupt. I uninstalled the software, but still corrupt drives. The next step I have done was running the current software GCC-4521B101(E).exe. When I ran this software again, the drives was automatically updated, but still marked as corrupt (in the Device Manager), even if I did a reboot. And then the big mistake: once more I tried to run this software, but during the update process, the machine restarted and boom! The DVDROM device doesn't work anymore. The led doesn't blink and if I push the eject button, nothing happens. Also bios and winxp doesn't recognize the optical drive. Then I plugged an other optical drive and it worked, but my old drive seems to be dead. So, what happened and how to solve this problem? Please help. Regards!

  Read the article

< Previous Page | 32 33 34 35 36 37 38 39 40 41 42 43  | Next Page >