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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“Bootable HDD not found” when trying to encrypt with Diskcryptor

I am getting this error when trying to encrypt a Windows mirrored volume. This is on a clean install of Windows 8.1 64bit. I made sure to install it in BIOS mode (not UEFI). The diskcryptor ...
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2answers
19 views

How to know if I have RAID configuration on my machine?

I was wondering if there is any Linux command I can use to check whether I have RAID setup on my machine? I know about cat /proc/mdstat but didn't show me anything meaningful. I just want to know if ...
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1answer
610 views

File History not working Windows 8.1

I have file history turned on yet no data is saved. When I turn FH off and then on I get an error message: "File History has found files that are encrypted with Encrypting File System, on a network ...
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1answer
2k views

Can I setup two RAID arrays on a single intel z97 controller?

Let me preface this by saying that I have never setup a RAID array myself, other than by using software RAID 0 in Windows for a set of storage drives. I purchased a new ASUS Maximus VII Hero ...
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4answers
10k views

ZFS Beginner Setup with Different Size Drives

Sorry for the noobie questions, I've been Googling all sorts of walkthroughs to create my ZFS raid, but I can't seem to find the correct links for the answers I'm looking for. This is my first ...
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2answers
409 views

XFS in-memory corruption after hibernate

I am constantly getting the below errors with XFS filesystem present on software raid-1 which was then converted to 3-disk raid-5. Errors happen exclusively after hibernate, normally either ...
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1answer
40 views

Deleting RAID 1 array with OS on it and switching to AHCI mode? Without losing data?

I am trying to break my RAID 1 array (using onboard intel raid controller) that has Windows 8.1 installed on it. I then want to switch my bios to AHCI mode and boot from one of those drives. Is it as ...
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1answer
16 views

mdadm --examine displays something different than --detail

Who should I trust to fill my /etc/mdadm/mdadm.conf ? mdadm --examine --scan returns /dev/md/0 while obviously it's /dev/md0 that is currently rebuilding What should I put in my /etc/mdadm/mdadm.conf ...
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14 views

raid5 after changing disk, data disappeared in lost+found or?

I lost a drive so I stopped my array, changed the drive, reassembled the array. So far so good except that when I tried to mount the array I had an error about md0 file system (sorry I rebooted so ...
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1answer
3k views

How do I set up a RAID 0 on windows 8?

I have a windows 8 machine with a 2T internal hard drive and 12G of ram. I have an external WD 3T that automatically backs up my entire I tunes Ibrary. I have added a second 2T internal drive and ...
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1answer
43 views

Functional MD complex RAID10 suddenly marks all drives as spares

This morning during a long ~1.5TB read operation sending data to an NFS client, my md complex-RAID10 array spontaneously stopped, then dropped four members for being "non-fresh" and failed to start ...
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16 views

Intel RAID controller failing to diagnose faulty disk

On my system (running Windows 7 x64) I have an Asus Z87 Deluxe motherboard, with a built-in Intel RAID controller; my config includes a Kingston 240-GB SSD disk for the OS and two Western Digital 4-TB ...
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1answer
43 views

Beginner Backing up ZFS Storage Pools

I'm considering moving my personal home data to ZFS on a Debian PC to take advantage of ZFS features such as data integrity and checksums, deduplication, and snapshots. The box has to be more than ...
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0answers
16 views

Cannot install Windows 8.1 on JBOD raid (AMD 770 chipset)

I am trying to make JBOD raid (yes, I know, that this is not a good idea, but I've decided to stick with it) and install Win8.1 on it. I've successfully created RAID in bios, but Windows 8.1 installer ...
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1answer
232 views

Add Mirror for volumes other than the last one in Windows 7 (disk “not up-to-date”)

I'm using Windows 7 x64 Ultimate. I have an existing 4TB disk with 3 NTFS volumes, a new 3TB blank disk, and I'm trying to mirror the volumes onto the new disk. My Windows install is on an SSD which ...
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0answers
9 views

Updated CentOS kernel to 2.6.32, system won't boot because mdadm array can't be checked/isn't mounted

Just updated a FreePBX system, kernel is now at 2.6.32. Have two RAID 0 arrays that mdadm arranges in RAID 1. Worked fine up until this update, now I get fsck.ext4: No such file or directory while ...
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2answers
60 views

Disk drives not detected by Windows installation but are detected by Bios

I just built myself a new computer and I'm having issues installing Windows 7 Professional (legit copy) on my RAID array I setup. Specs: Gigabyte GA-990FXA-UD3 rev. 4.0 AMD FX-8350 Vishera 4.0GHz ...
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0answers
21 views

Migrating RAID 1 to new size drives

We have six 3TB drives in a RAID 1 array on an Ubuntu machine. One of the drives failed (actually the second time this has happened) so I want to replace it, but I am thinking of trying to update all ...
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1answer
44 views

How do I migrate a single drive (no RAID) running under RAID controller, to AHCI mode without losing the GPT partition on it?

I have a 3 TB drive formatted with the GPT partition style. I use it for data on my Windows 7 PC. I've made the drive accessible via the mount point D: My motherboard's HDD controller mode has been ...
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1answer
6k views

Install Linux mint with Raid

My MB supports fake raid (Intel DH67CL motherboard). But I was using the system in 'software raid' as I could not correctly set up fake raid in Debian. Now, I decide to use Linux Mint 12. During the ...
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1answer
1k views

Does TRIM avoid the performance impact of mdadm RAID 1 on SSD?

It has already been mentioned in other questions that Red Hat recommends against using mdadm RAID 1 on SSD. Red Hat also warns that software RAID levels 1, 4, 5, and 6 are not recommended for use ...
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2answers
37 views

my computer hard-locks up with heavily threaded disk access

short of reformatting, I don't know what to do. It passed both C: and D: NTFS disk error checking (chkdisk at boot). I recently transitioned my D: data drive from RAID AHCI (BIOS config, though not ...
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0answers
25 views

How to setup Raid0 while having a ssd has main boot

i tried setuping this up. SSD with windows to boot on 2 x 2T Hard Drive When i switched my sata configuration in my bios to Raid to configure the other disks, my main boot ssd stoped working. It ...
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1answer
79 views

Unknown RAID Recovery?

I have an uncommon situation. I work as as IT administrator, I recently came across a box of ten hard drives that came from a company that we purchased a few years ago (before I started with this ...
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1answer
66 views

How do I resize software RAID partitions in GParted live?

I have a Linux RAID partition that I want to extend into empty space nondestructively. In GParted it has a lock symbol and right-clicking the partition brings up greyed out options. But on the GParted ...
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1answer
24 views

What are the performance differences between SSD caching and native SSD usage?

I am looking at making some changes to my computer. I currently have a machine running on the X79 chipset and I am using a dedicated RAID controller. The controller is an LSI MegaRAID 9260-8i SAS / ...
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1answer
165 views

Synology DS1010+ shows degraded under status

As the title says I've got an error on my friend's NAS this evening. Even when I check that disk, it said that it's "abnormal" under smart test but the status shows "Not initialized". Under the ...
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2answers
2k views

WIndows server 2012 will not allow mirroring drives/partitions

I have a dell c1100 server and it gave me a hard time installing windows server 2012. Now installed, I want to setup mirroring inside windows (raid 1 effectively). In disk management, I right click ...
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0answers
73 views

TRIM on non-SSD RAID?

A server has been experiencing temporary lockups (1-8 minutes) for some time and I recently found they have been corresponding to VSS snapshots lately. Through event logs I was able to determine that ...
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6answers
8k views

Can someone explain RAID-0 in plain English?

I've heard about and read about RAID throughout the years and understand it theoretically as a way to help e.g. server PCs reduce the chance of data loss, but now I am buying a new PC which I want to ...
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18 views

How exactly do you hook up 16 drives to this RAID card?

http://www.lsi.com/products/raid-controllers/pages/megaraid-sas-9240-8i.aspx#tab/tab1 I'm utterly confused only because I'm not versed as well in enterprise storage capability and solutions. The ...
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1answer
40 views

mdadm: Reactivating RAID6 array after improper shutdown

I have a seven-disk RAID6 array on a file server. The server experienced a crash and a hard reset was required, resulting in an improper shutdown. Note that I/O activity was likely occurring on the ...
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6answers
4k views

After enabling raid0, blue screen of death

Im trying to get a raid0 setup going. I have a 750 gb hdd with the OS on it and two 80gb HDD. For right now, I just want to raid0 on the two 80Gb hdd. When I enable raid in my Bios, Win7 has a BSOD ...
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RAID configurations are resetted after reboot-Ubuntu Server

I have configured software RAID 1 in Ubuntu Server. I have created RAID 1 and now one of the Disk fails so I removed it. I had attached a new disk. Created partitions as same like /sda from fdisk. ...
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8answers
23k views

Simple mdadm RAID 1 not activating spare

I had created two 2TB HDD partitions (/dev/sdb1 and /dev/sdc1) in a RAID 1 array called /dev/md0 using mdadm on Ubuntu 12.04 LTS Precise Pangolin. The command sudo mdadm --detail /dev/md0 used to ...
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0answers
25 views

Courting Disaster with fakeRAID10 (Dual Boot Win7,Ubuntu14.10)

Over the past several weeks (!), I have been trying to set up a dual boot with Windows 7 Enterprise and Ubuntu Desktop 14.10. The motherboard is a Sabertooth x79, and I wanted to install everything ...
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13 views

can i setup ISRT with a non RAID motherboard

hey there i was wondering if i could setup Intel smart response technology(ISRT) on a non RAID motherboard with 20GB of mSATA SSD... i mean the only two boot options available in my motherboard are ...
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0answers
18 views

Does the RAID 5 parity drive have to be same size as the rest of the array?

In the most basic RAID 5 array, does the parity drive have to be the same size as the other 2 drives? Standard Array: 1x4TB Drive (Storage) 1x4TB Drive (Storage) 1x1TB Parity Drive Or will the size ...
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5answers
21k views

How does parity work on a RAID-5 array?

I'm looking to build a nice little RAID array for dedicated backups. I'd like to have about 2-4TB of space available, as I have this nasty little habit of digitizing everything. Thus, I need a lot of ...
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1answer
81 views

AMD RAID controller sees drives & RAID 1; Windows & RAIDXpert don't

I've got two SSDs I'm trying to work in RAID 1 on a Gigabyte GA-990FXA-UD5. Here is the weird combination of all the different variables with a fairly ideal testing scenario (plenty of spare ...
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1answer
43 views

Three disk (possibly RAID) data recovery

I have on my desk three 160 GB disks that were once part of an HP Proliant Windows 2003 Server. They may have been part of a RAID configuration of some sort. They may or may not be damaged in some ...
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3answers
53 views

Is it possible to configure a multiplatter hard drive as separate drives?

I am looking to set up a RAID mass storage array, and have been reading about how large disk sizes are jeopardising rebuild because of the time required to execute a full rebuild and the chance of ...
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0answers
27 views

Delete RAID Array via PERC BIOS?

I have a an older PowerEdge 800 with a PERC 4/DC controller and RAID 1 array. Its running Windows Server 2008, and it serves as my file server (among a few other roles). I've swapped out all the ...
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1answer
72 views

Is it safe to stop a RAID 5 expansion?

I'm having some issues expanding a RAID 5 array on a Synology DS413. The drive has gone from 3 x 3TB WD Green drives to 4 x 3TB. I started an expansion operation and it's been stuck at about 60% and ...
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2answers
7k views

Can I setup a software RAID in Windows 7 using Virtual Hard Disks?

Well, the title of my question pretty much sums it up, but let me elaborate. The main idea of what I want to do is as follows: 1) I have two separate hard disks, with nearly equal performance. I use ...
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1answer
32 views

software raid mirror verification

I am created the raid 1 mirror , I have made two partitions in in single hard drive they are sdc1 and sdc2, my question is how to verify that data is being written in both drives and how can I know ...
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33 views

Why does UEFI BIOS only identify a 2TB drive on a 25TB virtual drive?

I configure a RAID6 using 16 2TB disks, and finally get a 25TB virtual drive as shown in LSI MegaRAID BIOS. And then I boot via a USB stick and try to install 64bit Ubuntu 14.04 on it. At the ...
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2answers
63 views

Cache of SCSI disk

I have a SCSI controller (HP Smart Array 642), using cciss driver on Linux, which is connected to several SCSI disks. I am trying to optimize the communication between these devices and came to the ...
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0answers
45 views

SSD RAID in Haswell NUC with Ubuntu: Does TRIM work?

I want a low-power, small, silent x86_64 Ubuntu computer with storage that's resilient against hardware failure of a drive. I'm thinking of buying D54250WYKH or D34010WYKH, one mSATA SSD and one 2.5" ...
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105 views

gdisk doesn't recognize RAID0 disk as size of whole array?

I put in two Samsung 840s at 256GB and RAID-ed them together and installed Windows 8. I'm having trouble using gdisk to get ready to install Linux. gdisk sees the array, /dev/sda0, as a whole ...