Redundant array of independent/inexpensive disks; a technology which utilizes multiple disks to provide increased reliability, performance, and/or redundancy. Can be implemented either in software or with a hardware controller.

learn more… | top users | synonyms

1
vote
1answer
22 views

Which is faster: write two big files to separate hard drives, or write them to the same set of drives in Raid0

This is sort of related to the answer here: http://superuser.com/a/325771/396863 Let's say I have a two 1 gb files which I want to simultaneously write to my hard disks. As noted in the linked ...
1
vote
1answer
55 views

Assemble 3 drive software RAID5 with one disk missing

Is it possible to assemple a three drive software RAID5 with only two disks? I have one failed disk in my setup which i could not read at all but the two other disks are fine. So i created a dump of ...
0
votes
0answers
73 views

File/folder or program (SQL data) access becomes slow in network from the server- network connectivity issues in the newly upgraded server

Info: New server configuration is as follows Server chassis: CHENBRO CHASIS Model: RM-41416B Motherboard: Intel Server board S2600CP4 Processor: Intel XEON E5-2630 V2 (Single CPU) RAM: 8GB RAM ...
1
vote
0answers
53 views

BTRFS, Files on a single drive in array but keep 2-parity?

Is it possible to setup a BTRFS array of disk but tell it to keep files on individual disks instead of stripping them and still keep a 2-parity? The idea is that if three drives die, the files on the ...
0
votes
0answers
7 views

Will plugging in additional hard drives when RAID is enabled in the BIOS mess up the drives?

My girlfriend's computer has one drive, and the bios is configured to have raid enabled. When I try putting it in legacy / no raid mode windows gets a bsod during boot and restarts. Not sure what's up ...
1
vote
0answers
60 views

Pegasus RAID *missing* a drive

I have a RAID5 Pegasus R6, connected via Thunderbolt. At some point, it started making strange repetitive beeping noises; when connected, one of the drives wasn't showing up at all. Shortly ...
0
votes
0answers
20 views

Multi-channel SATA RAID card to RAID 4 Bay Enclosure

I have a Mediasonic ProBox HF2-SU3S2 4 Bay 3.5" Hard Drive Enclosure. The box only has one eSATA port and one USB 3.0 port on the back. According to the manual of this storage box I need to get a ...
0
votes
1answer
41 views

linux + RAID - on which disk are my file?

I have a server with 4 physical disks ( HP WK 8600). Seems like the 4 disks are mounted on a RAID card. The Ubuntu 14.04 sees only one disk. -wks:/dev$ lsscsi -g [2:2:0:0] disk INTEL ...
0
votes
0answers
34 views

Fix boot sector / raid issue

So I had windows 7 installed on a raid 0 "drive", and therefore had my bios set in raid mode rather than AHCI mode. I then installed installed win 10 on another drive. It's just 1 SSD, no RAID, but ...
0
votes
1answer
332 views

Repair raid after bad suspension (Error Occurred 0)

My zenbook after a standby problem in xubuntu 14.04 is not booting anymore, neither xubuntu nor Windows want to boot. This screen comes up after BIOS: pressing ctrl-i i obtain: Option 1,4 and ...
0
votes
0answers
39 views

Can Preload CLI provide same\alternative RAID setup options?

So I access server over supermicro IPMI which does not support USB mouse thus WebBIOS for RAID setup is not an option. Yet "MegaPCLI SAS RAID Management Tool" is an option and I hope alternative. ...
0
votes
1answer
57 views

LVM2 RAID6 CentOS 7 not working

I have a server with 4 spare 6 Tb disks. I want to set up RAID6 on these four disks. It is well understood that 4 is the minimum one needs to set up RAID6. No matter what I pass to LVM2, I get ...
0
votes
1answer
123 views

RAID 0 + Backup

I have two 1GB hard (A) drives, and one 2TB hard drive (B). What I want to do is set up a RAID 0 on (A) and then back it up to (B). To my understanding, this would be different than a RAID 5 set up, ...
0
votes
0answers
47 views

How to turn a current drive into a RAID array?

Everything I've been able to find by googling on creating RAID arrays assumes you are starting from scratch with blank disks. However, I have a drive that is almost filled, and would like to turn it ...
0
votes
1answer
31 views

Resize/Move RAID 1 Partitions in Kubuntu

I have a client who didn't heed my warnings to compress/archive data, and now they've managed to fill a 4TB HD (ack) and now it won't boot due to no space left on /home for temp files. The good news ...
1
vote
1answer
58 views

Can I recover data from raid 1 drive after windows installation?

I had a raid1 setup on asus motherboard on windows xp. At some point one drive failed and I took it out. For a long time I continued to use the remaining drive without replacing the bad drive and ...
2
votes
0answers
221 views

lvmcache — one cache pool for multiple origin LVs

I have a shiny new computer with a not-that-large SSD (120GB) and two gigantic spinning-rust HDs (3TB each). I want to partition it as follows: swap (~128GB), operating system (~128GB), and data ...
0
votes
3answers
97 views

Ubuntu - OK to raid0 and raid1 on same two drives?

I'm building a household Ubuntu 14.04 server and just installed two 3TB drives for the files and media. The box (HP DC7900 SFF) uses Intel Matrix RAID which, according to wikipedia is neither hardware ...
0
votes
2answers
2k views

Dynamic Disk (software RAID) not accessible after windows 10 upgrade

I have two 2TB drives set up as a single volume in Windows. In Disk Management these physical drives are listed as Dynamic. I set them up in Windows 7, and they continued to function fine when ...
0
votes
0answers
31 views

Rampage IV Extreme RAID, don't even see a Ctrl+i option

Trying to do a RAID 0, went to the SATA settings, changed to RAID, didn't work. Try turning on hot plug, doesn't work. Tried IRST instead of RSTe, doesn't work. Disabled fast boot, doesn't work. Not ...
0
votes
0answers
14 views

Moving a Promise SmartStor Raid 5 to a Promise Pegasus2

Hi guys I have a Promise SmartStor DS4600 RAID server that is out of space (4gb). I want to move all the data to a new RAID server made by Promise (8gb or 12gb). I am having a really hard time ...
0
votes
0answers
18 views

Replace (non-raided) drive in raided server

Current setup: ~100gb disk (sda) with 4 partitions: /boot, /home, "system folders", swap 500gb RAID5-array (md0) with 1 partition: /var OS is Ubuntu Server LTS 15.04 on an old hp 32-bit system ...
1
vote
0answers
155 views

How to make the low cost , most efficient NAS raid with Raspberry Pi [closed]

I'm doing an experiment with my Raspberry Pi for education and giggles. I'd like to know which is the most energy and speed efficient option considering the materials I have and what I'm trying to do. ...
0
votes
0answers
26 views

Are dd read/write tests using dsync reliable under RAID?

I'm performing performance testing of some new hardware, and I was quoted from a vendor what kind of performance i should get from a dd command using the oflag=dsync option. However this amount was ...
0
votes
2answers
63 views

SSD (SATA) Disk along side RAID with 3 Disks

I have the P6T7 WS motherboard (https://www.asus.com/Motherboards/P6T7_WS_SuperComputer/) and wanted to install 4x 4TB drives as a RAID 10 on the ICH10R Serial ATA connectors (6 times) , I have also ...
1
vote
1answer
127 views

Fail device in md RAID when ATA stops responding

I had created five 1TB HDD partitions (/dev/sda1, /dev/sdb1, /dev/sdc1, /dev/sde1, and /dev/sdf1) in a RAID 6 array called /dev/md0 using mdadm on Ubuntu 14.04 LTS Trusty Tahr. The command sudo mdadm ...
0
votes
0answers
25 views

Can I create Raid Secondary Storage in Windows 8.1 Pro?

I have Asus MAXIMUS V FORMULA Z77 chipset motherboard It has: 2 Intel sata z77 6.0 Gb/s controllers (used currently) 2 Intel sata z77 3.0 Gb/s controllers (used currently) 4 Asmedia sata z77 6.0 ...
3
votes
3answers
546 views

3TB drive on BIOS system

I have a HP Proliant microserver gen 8 on which I am planning on installing Debian. I was thinking of setting up a raid-1 configuration through the built in raid controller using two Western Digital ...
1
vote
2answers
152 views

Raid mode 5+ has collapsed on my Mediasonic HFR2-ASU3S2, how to get data back?

I have this: Mediasonic HFR2-ASU3S2 I set it up with 4x 4tb drives that were meant for NAS, all WD drives. Now when I plug in the Mediasonic HFR2-ASU3S2 I get a warning pop up asking me if I want to ...
1
vote
1answer
197 views

Repair btrfs RAID? Error: Inappropriate ioctl for device

I have a RAID5 btrfs with 8 disks and a hard disk died and just disappeared from the list. Now I tried removing it but got an error: ERROR: error removing the device '/dev/sdb' - Inappropriate ioctl ...
0
votes
1answer
40 views

No RAID boot menu on system start up

I have an HP Pavilion Elite HPE. I used to have an onboard RAID boot up screen but now I do not. Could this have vanished based on a glitch with using a different graphics card or the slow that it is ...
0
votes
0answers
56 views

Windows Software RAID 1 - How can I “Offline” both disks at the same time?

I want to disable both drives in my Mirrored Volume setup so that I can mount them in a virtual machine (for testing, no important data is on the drives right now). Offlining them individually breaks ...
-1
votes
1answer
337 views

Software/Hardware RAID vs Windows Storage Spaces for DAS

I plan to upgrade my Intel RST Software RAID1 setup with 2 internal SATA drives to something more versatile: Drives need to be external (they have to reside in an enclosure connected to PC via eSATA ...
0
votes
0answers
14 views

software raid1 compatible on OSX and Ubuntu on external disks

I'm using external disk dock with two disks and want to setup software raid1 so that the setup works when usb3 mounted from both ubuntu and osx. How is this possible?
0
votes
1answer
29 views

Raid drive cannot be detected

Only yesterday I bought two new 2GB Seagate drives and set them up as raid and installed lubuntu. It was working fine and there was no problem but today I made the very bad decision of swapping over ...
0
votes
0answers
98 views

Use 4TB partition with old NTFS-3G which doesn't support GPT and RAID

I've a D-Link Router (2750U) which has a USB port and FTP Server. I've also a 4TB External H.D.D which I want to use as one partition with this Router as my home cloud. I don't want to split this ...
1
vote
0answers
186 views

Dual boot Win8/Linux on Asus Zenbook UX301 keeping intel imsm RAID0

I have Asus Zenbook UX301 with Win8 preinstalled. I would like to have a Linux installed in dual-boot configuration. However, Windows is using the notebook 2 SSDs as intel RAID0 (rom-based RAID, ...
0
votes
2answers
609 views

Which is faster, 2 SSD drives , each plugged into a sata 6 port on RAID 0, or 1 SSD drive plugged into a sata express port (10gb)

I have a new motherboard and it has 1 sata express port that's up to 10gb transfer. So I'm wondering which would have better performance? 2 SSD on raid 0 in a sata 6 port or 1 SSD on a sata express ...
1
vote
1answer
57 views

Hardware RAID10 HPA recovery

I have a hardware RAID 1+0 based on external CFI-B8253JDGG DAS. It was connected to PC with eSATA and contains 4x1TB HDD (Total capacity is 1.82TB in RAID10). Some days ago I tried to connect the DAS ...
0
votes
1answer
79 views

TestDisk failed in Deep Search?

I'm trying to recover data from a colleague's 4TB external G-RAID drive. I've saved the main partition from the quick scan result, but that didn't help, so i spent the past week doing a Deeper Search. ...
1
vote
0answers
119 views

Parity errors after verify with Intel RST

I have Intel RST RAID 1 running on a Windows 7 machine. I have it set to do a verify and repair every week. I frequently notice parity errors, some weeks over 100 for a 1 TB RAID 1 array. I've ...
3
votes
1answer
73 views

RAID 0 speed improvement

I've got a free Samsung EV0 840 120Gb from my uncle. I already got a 250 EVO 840 in my computer. Now I was asking myself if I got a significant speed boost if I put them in RAID 0. I know the total ...
0
votes
1answer
84 views

No extents were found for the plex, when setting up Soft RAID 1 with RAID 5 on Windows Server 2012

I did find a similar question on this, but it did not really answer my question or fix the problem, so i'm starting up a new questions on it. This is my setup now: You can see if i have RAID 5 ...
-1
votes
1answer
449 views

Correct kmod-megasr driver to install CentOS 7 on Intel Embedded RAID Technology II?

I am trying to install CentOS 7 on a server using RAID 5 on Intel Embedded RAID Technology II. I did need to install a special hardware key to unlock the RAID 5 feature. I have succcessfully ...
0
votes
0answers
49 views

Missing Operating System Win 7 RAID 0 setup

I have 2x1TB RAID 0 setup on an Asus P8Z77-V PRO Motherboard.Coming out of BIOS my PC just went to a blank screen "Missing Operating System". I have tried booting from the original Win 7 disk, ...
1
vote
1answer
48 views

Should a Linux Swap partition be on the RAID?

When setting up a new system, if I am planning on mirroring two hard drives, what should I do with the SWAP area? I can think of three things I can do... Do a mirror of the SWAP partition Stripe it ...
1
vote
0answers
60 views

Optimal load balancing between two hard disks. Does RAID 1 do the trick?

I am looking for a linux disk system for streaming media purposes that would do smart load balancing and minimize hard disk wear. To illustrate my points, lets take a physical hard disk device and ...
0
votes
0answers
75 views

Re-enable Windows 8.1 software raid 1

After re-installing my Windows 8.1 OS, not suprisingly, the software RAID 1 (mirror) does not work. In Computer Management -> Disk management there's a red X over a "no named" volume, with status ...
1
vote
0answers
30 views

btrfs not distributing data to smaller disks in 4-disk RAID1 array

I have a btrfs filesystem composed of four disks of sizes 3TB, 3TB, 1TB, and 1TB, configured in a RAID1 (data and metadata). I've noticed that btrfs doesn't seem to want to use the smaller disks at ...
0
votes
0answers
63 views

How to access access virtual raid drives created by another linux system that died

I had a server, red hat 6.4, that had 2 raid systems connected to it, but then the server suddenly died. I connected one of the raid systems to another linux system with centos 6.3 after installing ...