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.

learn more… | top users | synonyms

0
votes
0answers
12 views

Is the software raid provided by windows compatible between windows xp, 7, and 8?

Is the software raid provided by windows compatible between windows xp, 7, and 8? I think some of the newer RAIDs will not be compatible, but will specifically "mirroring" (RAID 1) be compatible ...
0
votes
2answers
59 views

Simultaneous failure of 8x SSD's in raid 10

My friend keeps arguing with me about putting SSD’s in raid vs HDD, I need to settle this. What are the odds of all the SSD’s failing vs HDD”s at once assuming they are from the same assembly line and ...
-1
votes
0answers
15 views

“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 ...
2
votes
2answers
27 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 ...
0
votes
1answer
41 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 ...
0
votes
0answers
15 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 ...
0
votes
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 ...
1
vote
1answer
45 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 ...
0
votes
0answers
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 ...
0
votes
0answers
17 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 ...
1
vote
1answer
45 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 ...
0
votes
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 ...
0
votes
2answers
63 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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
0answers
29 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 ...
0
votes
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 / ...
1
vote
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 ...
0
votes
0answers
76 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 ...
0
votes
0answers
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 ...
0
votes
1answer
42 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 ...
1
vote
0answers
15 views

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. ...
2
votes
0answers
26 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 ...
0
votes
0answers
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 ...
1
vote
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 ...
0
votes
3answers
54 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 ...
0
votes
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 ...
0
votes
0answers
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 ...
0
votes
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 ...
4
votes
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 ...
3
votes
0answers
47 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" ...
0
votes
0answers
35 views

NAS - failed hard drive - unable to mount externally

I had two 2TB hard drives in my Dlink DNS-320 NAS, RAID 1 mirrored, working fine up unti. a few days ago, I heard some clicking from my NAS (which points to HD failure), and then I could no longer ...
1
vote
0answers
21 views

Can I reuse an overheated HDD after formatting in a ZFS RAID0?

I have a WD50EFRX which overheated according to SMART data (95 degrees celsius) and damaged some blocks (raw value of Raw Read Error Rate ~ 22000). There're no other values besides the Raw Read Error ...
0
votes
0answers
17 views

LaCie 2big, use existing disks (not formatted by the device)

About the LaCie 2big Quadra: I have 2 x 1T disks that have been formatted and used on Linux (not on LaCie). It happens that both disks have the exact same partitioning, while the content data is ...
1
vote
0answers
17 views

RAID: Switched from W2K12 Hyper-V to Ubuntu

Until yesterday I was using Windows Server 2012 Hyper-V. I had two RAID sets: one 600GB (2 disks) and one 3TB (2 disks). The first was connected to Windows Server. The second was passed through to an ...
0
votes
0answers
14 views

3ware RAID controller kicked out two drives from unit after replacing another degraded drive

One of our servers had a degraded drive and after replacing it, two other drives were shown as "NOT PRESENT" in the web interface. The whole RAID unit is now inoperable and I'm not sure how to re-add ...
1
vote
1answer
25 views

How to Create Virtual Block Devices

I want to create multiple virtual block devices like /dev/sda and then use them to create an md device for test purpose. I have mounted my root filesystem on /dev/sda1 and don't have extra space to ...
3
votes
0answers
38 views

Linux access to Windows 7 dynamic volumes (striped or mirrored)

I'm considering setting up a dual-boot system for the first time for many years. My plan for the system is to set it up as follows: SSD for both system partitions 2 identical hard disks, split ...
3
votes
1answer
38 views

Is it possible to use RAM in a RAID-1 configuration?

If I have two or more memory modules, can I get a system to use them in RAID-1 ("RAIM"?) as a poor-man's ECC?
0
votes
0answers
33 views

Windows 8.1 incorrect file size

I have a QNAP NAS attached to my home network with 2*2TB drives in it - RAID 1. I have a windows mapped drive to a share on the NAS from 2 machines - 1 Win7x64, 1 8.1x64. When I select a group of ...
1
vote
1answer
41 views

Is it possible to config RAID 1 ( RAID 0 (500GB + 500GB) + RAID 0 (1000GB) )?

We have a server with 2 500GB hard drives which are currently mirrored (RAID 1), but we're running out of space now. So, we have one more bay available, so my question is: if we buy 1 TB hard drive ...
1
vote
1answer
175 views

Shrink RAID by removing a disk?

I have a Synology NAS with 12 bays. Initially, we decided to allocate all 12 disks for a single RAID-6 volume, but now we would like to shrink the volume to use only 10 disks and assign two HDDs as ...
0
votes
1answer
29 views

Would software RAID 1 be broken if I move both drives to a new PC? [duplicate]

Does a RAID 1 setup by software (win) break once you move both drives to another Win PC? Is there any way to bind the drives together so that the RAID setup stays, even after changing motherboard/cpu? ...
1
vote
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 ...
0
votes
0answers
25 views

How to setup RAID for data and AHCI for OS

I just bought 4 hard drives containing 4 TB each which I hope to set up in a RAID 10 setup, giving an apparent continuous 8 TB hard drive that is backed up. I also have a 256 GB SSD and a 1TB Hard ...
0
votes
0answers
59 views

Add 2 HDD connected via USB to Synology DS211j using Raid 1

I have a Synology DS211j and 2 old 2TB S-ATA HDD. What I plan to do is to buy two cases for these two hard disk drives that allow for connecting the hard disks to my Synology using the USB port. I ...
-1
votes
1answer
146 views

4-bay NAS write performance RAID 5 + SSD vs RAID 10

I am planning on buying a new NAS (QNAP TS-453 Pro) for my Home Office. The NAS has 4 HDD bays and supports SSD Caching. Hence, I was wondering which setup would probably be faster in terms of write ...
0
votes
0answers
37 views

Is it possible to clone previous boot disk to new imsm raid array?

A PC with a hard drive 750GB. The hard drive has one partition with Vista and several partitions with Ubuntu 14.04. I mainly work with Ubuntu but occasionaly I boot Vista. Recently, the drive's smart ...
0
votes
1answer
56 views

Recovering software raid

I have a 3-disk software raid 5. Two disk appear to have failed at the same time; their number of Events is the same, while other third disk's is higher. I have copied all three disks into new ...
0
votes
1answer
24 views

Bootable RAID1 instead of extra SATA drive

Here's the deal as a web developer I am total rookie in the hardware stuff, but since we make more money now and tried to experiment some stuff. I got this Raid1 (4 SAS Drives) and extra 3TB Sata ...