RAID stands for Redundant Array of Independent Disks, and is a technology which can provide increased reliability, performance, and/or redundancy by utilizing multiple hard drives simultaneously. RAID can be implemented in a computer via either a hardware or software controller.

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How to force System Reserved to be created on the boot disk drive

I have machine with three disk drives - Disk 0 500 GB SSD - Disk 1 4TB Mechancial Drive - Disk 2 4TB Mechanical Driver I am installing windows 8.1 on this machine with SSD being the c:\ ...
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Windows software RAID: dynamic disks or storage spaces?

I have a couple of big SATA-3 disks (4 TB) which I use on my home computer for storing data, and I want to set them up in a RAID-1 configuration for redundancy; I don't trust my motherboard's ...
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4T RAID 0 Partitioning issue

I am building a new workstation 1.2T 10K SAS X 4 for Win 7 Pro SP1 x64 I must use RAID 0 for this workstation. What I would like to have is C = 500G D = rest of spaces So BOIS based system with ...
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2x3tb vs 3x2tb RAID drives for home nas [on hold]

2x3tb vs 3x2tb RAID drives for home nas What's more reliable if both of them cost the same money? 2x3tb in RAID 1 3x2tb in RAID 5 From my perspective removing one failed drive of 2tb is cheaper ...
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Create a Spanned drive with 3 external hard drives

I'm trying to create a merged drives from 3 externals drives (2*3Tb + 1 * 2Tb) on Windows. I went to diskmgmt.msc and tried to create a spanned drive, but i keep getting the error "Operation not ...
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cloning drives to correct RAID 10 failure

I don't type questions like this very often, so I apologize if I could have made it clearer. I have 4 HDD slots in which I had a RAID 10 array setup. It is a motherboard software RAID so clonezilla ...
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SSD's or HDD's in a LANcache?

I am building a LANcache for a lanparty that I'm organizing. We have about 80 visitors (pretty small LAN), but our uplink is limited to 100mb/s due to reasons and it's constantly saturated with game ...
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35 views

btrfs convert from raid1 to raid5

Is it possible to easily convert a btrfs raid1 to a raid5. I mean at the end of the day. Its really just two mirrored drives. So I would think this should be easy to do. I want to now have 3 3TB ...
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Intel RAID not detected after rebuilding PC - recovery options?

I'm running a RAID0 array on a Windows 7 PC with an Intel ICH10R SATA chipset, consisting of 4 x 4TB drives (plus a separate drive for the OS). I re-built my PC after getting a new case, and cleared ...
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Is there any reason to replace a failing disk in a raid10 before it has completely died?

My home server has four 4TB disks configured as a RAID10. I've gotten a few messages recently suggesting that I'm about to lose one of my disks: $ WARNING: Your hard drive is failing Device: ...
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SSD cache, SRT, Raid 0 : speeding up my C drive

I have a Z97 rig and I'm interested in speeding up my disk drives. This is my current setup: 1) 240GB SSD for main disk 2) 500GB hard drive for User Files 3) 120GB for photo editing (I move files ...
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Is a btrfs RAID1 mountable if the added device isn't available/offline/failed/degraded?

Assume I created a RAID1 with btrfs's functions (btrfs device and btrfs balance subcommands instead of mdadm) like so: btrfs device add /dev/sdxZ /dev/sdxY btrfs balance start -dconvert=raid1 ...
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How Do I Properly Disable Intel SRT & Remove the SSD Cache Drive?

I bought a Dell XPS 8700 which comes with a 2TB HDD paired with a 32GB SSD cache drive using Intel's SRT technology. I'd like to install a new 512GB SSD for the OS and use the separate 2TB HDD as a ...
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Intel Software Raid: Downgrade from RAID10 to RAID 1

My configuration Windows 8.1 Asus Z87I Pro (Rev C2) 4x WD Red 3TB, set up as RAID10 in the Intel tool / EFI My target I want to remove 2 of the HDDs permanently from the RAID because I don't ...
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58 views

Low speed on an 850 Pro RAID-0 array

I recently bought two Samsung 850 Pro 256GB SSDs in order to replace an old SSD and build a RAID-0 array on my PC. So, the configuration of the PC is the following: CPU: Intel(R) Core(TM) i7 CPU X ...
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Should I replace HDD in raid array every N years even if disks aren't corrupt?

Typical scenario: I made a raid 1 array out of 2 disks, that contains data I wouldn't like to lose. I found that average life-time of HDD (rotating drive) is 3 - 5 years. Does it mean that if the ...
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suse linux installatation on HP Gen9 server

I am unable to install SUSE Enterprise Server 11.0 with sp3 on HP gen9 server. It's unable to recognize the storage. The raid controller is p440ar. It had tried installing with HP ProLiant Gen9 ...
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Error RAID1 but can't seem to find where the error is?

I'm having trouble figuring out where the problem is. I'm seeing my two drives... I removed a failed drive and installed an empty one. Thought I added it to the raid and it said it was rebuilding. ...
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22 views

XFS filesystem spanning drives and allocation group alignment

I have a query regarding creating an XFS filesystem on what is commonly incorrectly called a JBOD volume, that is, linear RAID or Spanning raid. I have two hard drives (1.5T and 2T) that I want to ...
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Removed drive from NAS not recognized when plugged in via USB

I'm having a problem accessing the data from a drive that was in my NAS but is now plugged in via a USB caddy. This drive was not in a RAID array as it was a volume with a single disk. Although it ...
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Does setting BIOS SATA RAID/AHCI mode to RAID will activate RAID operation upon new hard disk insertion?

Each BIOS 'SATA RAID/AHCI' mode comes with at least 3 different mode - Disable/IDE or RAID or AHCI. Does setting the 'SATA RAID/AHCI' mode to 'RAID' will cause the following: RAID 1 activated when ...
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Does switching SATA/AHCI mode in BIOS affect Windows OS and data in the hard disks

Suppose the following situation: Each desktop machine have 3 internal SATA hard disks of different sizes (500GB, 1TB and 2TB) The BIOS have 3 types of SATA/AHCI mode (Disabled/IDE, RAID and AHCI) ...
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AHCI and RAID for BIOS settings when using 2 or more SATA hard disk

My third-hand desktop machine have the following BIOS settings: At what scenario should I choose 'RAID' and what scenario should I choose 'AHCI' and what other scenario should I choose 'DISABLED'?
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RAID solutions for a home server instead of ZFS [closed]

I’m using Ubuntu Server with 4 2TB disks and I’ve been using ZFS for around 8 months on my HomeServer. But now I have reached the capacity of my pool, so I want to purchase a new drive and add it to ...
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21 views

Disconnect a RAID 1

I currently have a setup of a 2 disks in RAID 1. How-ever I'd like to disconnect the raid and only run off one disk. Is this possible? Or will I have to reinstall the system? The RAID is a soft-raid ...
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Linux soft RAID5 array with mismatched events won't assemble

The last three nights, one of my USB controllers has gone offline in the middle of the night, knocking 4 of my 8 disks offline. The first two times, I was able to get it working again with mdadm -A ...
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Drives not working after failed factory reset of NAS?

I got an old ReadyNas 1100 that had 4x500GB drives from start. One gave up so there were 3. I thought I should by some upgrade disks and went ahead and bought 2x2TB. Now begin the dream. I just ...
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AMD RAID Configuration SSD+HDD

Today, I bought a new components for my HTPC and as usual, I went with Gigabyte Motherboard. This time, I bought an AMD board: GA-F2A88XN-WIFI. Besides the board, I bought a Kingston Fury 120 GB SSD ...
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how can I reintegrate a lost and found pv into an LVM vg?

I recently lost a RAID that was a physical volume of one of my linux LVM volume groups. I ended up doing a vgreduce --removemissing and got on with the business of restoring the data. Well, today I ...
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Recover data from non-RAID SCSI drives on Dell PowerEdge

I have two old Dell PowerEdge 1750 servers. Server A has failed physically, and I need to restore some data from it's hard drives using server B (I do not have any other hardware that can work with ...
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Unclear on how to enter and setup the RAID BIOS on a GIGABYTE GA-Z77X-UD5H LGA 1155

I have two Samsung 850 Pro 256GB SSD’s hooked up to a GIGABYTE GA-Z77X-UD5H LGA 1155. When I enter BIOS, it shows that I have two of the drives connected, and I have my SATA mode selection set to ...
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Internal SDD + External SSD (via firewire) RAID 1 and boot drive version control (like system-wide git)

I was thinking in a theoretical realm about a certain use case, and was wondering if anybody has ever experienced anything like this. If I were to set up my internal SSD and an external SSD ...
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Exchanging harddisk of Medion Akoya MD-98634 laptop

I am trying to replace the original 1TB harddisk of my Medion Akoya (MD-98634) with a Crucial BX100 SSD (250GB). This is what I found out so far: The original setup is running the 1TB HDD in a RAID ...
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Recovering 1TB hard drive split into two 500GB drives without formatting

I am using Windows 7 and am trying to recover two working drives. The hard drive in question was: http://www.newegg.com/Product/Product.aspx?Item=N82E16822204022 I am pretty sure they were ...
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Cannot get RAID working with Mac Mini after adding drive

I had a working RAID array with 3 2TB drive in an external Startech.com SATA enclosure that was set to RAID5 I wanted to add another 2TB drive, so I added the drive but according to the manual, I ...
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Linux machine with RAID 1 not booting after failed drive

I’m not that experienced with Linux and am troubleshooting a machine that is no longer booting up. Originally it had two drives installed in RAID 1 and one drive failed. I took the good drive out and ...
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How to configure RAID on Toshiba Satellite P500-15e laptop?

I had bought a laptop (Toshiba Satellite P500-15e) when studying in France. Once I installed OpenSuse linux and regarding the fact that I didn't know anything about it, I had to erase it. ...
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RAID 1 accidentially booted in AHCI mode

I have two Samsung 840 EVO SSD's in RAID 1 (Asus P87-Pro and Intel Controller) with Windows 8.1 Pro on it. After a BIOS update, apparently all BIOS settings was reset, which apparently changed the ...
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How to install linux mint 17.1 to encrypted raid 0 array

I just got a new SSD and I wanted to install Linux Mint 17.1 to a raid 0 array of SSDs. I also want the array to be encrypted. I tried the following guide and got mdadm to setup a software array and ...
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50 views

Mix 3 different sized hard drives into a RAID 5

I’ve got three hard drives different sizes and I want to create a RAID 5. The three drives—all Seagate—are: 1.5 TB 3 TB 700 GB Is there a way to RAID these or is it possible to do the folloiwng: ...
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RAID5 active device failed during reconstruction

I have this Linux RAID5 array with 4 2TB harddisks, with 3 active device and one spare, giving me a total disk size of around 6TB. Recently one drive (sdd) is starting to give me some SMART errors, ...
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My CentOS RAID-10 array won’t boot

My RAID array won’t boot and gives a kernel panic. Any attempt to kill init message and goes into endless reboots. Motherboard is a Supermicro 2P with Opteron 2376 4-core CPUs, CentOS software RAID, ...
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Rebuilding FakeRAID RAID 5 with new disk, no partitions show up, invalid PMBR

I have a RAID 5 array with 4 2TB disks on a HP Z800. One disk failed and was swapped out for a new one. I went into BIOS Intel Storage Matrix Utility and set the Array to rebuild with the new disk. ...
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Problems creating a bootable RAID volume when imaging from HDD to SSD

I have an old Dell XPS420 with an Intel RAID controller on the MB. For years I’ve had RAID 1 enabled on a 2x1TB array set up as two volumes: A 300GB volume which has Windows 7 installed on it and the ...
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Recover data if PC (motherboard) fails with software RAID 5

I'm planning to implement a RAID 5 (or 6) system on an old PC (windows or linux). It doesn't have HW RAID 5 support so I'll do it via software (e.g. windows integrated RAID). Will I be able to ...
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How to transfer software raid from windows to linux?

I have a software raid 1 on my windows 7 machine over 2 hard drives and for various reasons, mainly my windows 7 machine wont work correctly over the lan for some reason and no solution in sight and ...
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Is there a way to reformat a RAID array without losing existing data on the disks?

I have a RAID 10 comprised of 4x 4TB disks. It is currently formatted in XFS on a CentOS server (The server's root directory is is not on the RAID), and I've been looking at replacing XFS with ZFS ...
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upgrade (software) RAID 1 capacity

I am upgrading a software RAID 1 array (/dev/md0) from 2TB drives (sda and sdb) to 4TB (sdc and sdd). Straight forward; ext3, single partition, no MBR, no LVM. In the end, I would like to have two ...
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What happens when a RAID rebuild fails due to URE?

I understand that when a disk fails in a RAID configuration, whatever the RAID level you're using (1, 5, 6, or 10), you need to replace the failed disk and the array rebuilds. Now with large capacity, ...
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Linux fault tolerant array for home server

Is there any method of creating a fault tolerant disk array with a mix of disks? I intend to use debian linux stable as a file server for home. The data is going to be cloud backed up but I don't ...