RAID - Redundant Array of Independent Disks. A Storage technology to provide redundancy and performance, to reduce I/O bottlenecks involved in using multiple disks for large storage.

learn more… | top users | synonyms

1
vote
2answers
763 views

Can I mount a microsoft mirrored dynamic disk?

I'm testing out sw raid in windows 7, but I almost always use linux and I would like to know if it's possible to mount such a mirrored dynamic disk. I can already mount each members separatly but ...
3
votes
1answer
255 views

vPrevent Debian from auto-assembling raid at boot

I set up a Debian wheezy (7.6), installed openmediavault, and created a software raid 5 with that. It is listed at /dev/md127. Now I want to move that to a virtual XEN VM. To do so, I have to stop ...
3
votes
1answer
166 views

Raid 5 rebuild with wrong stripe size & no failed disks - is data lost?

I'm curious if there are hidden complexities to RAID5 and RAID5 rebuilds. My understanding is that (in a 3 disk array) a rebuild would just directly compute the parity of disks 1 & 2 and write ...
3
votes
1answer
1k views

Proxmox Master Node crashes

I've inadvertently discovered a Proxmox bug. I run a personal cluster of 4 nodes (a technology lab for giggles and gags). Each node has a Dell Perc 5i and 4 HDDs in RAID 10. The standard Proxmox ...
2
votes
1answer
39 views

data recovery after partial shred

well i issued the following command: shred -v /dev/sdb. However I wanted to shred /dev/sda. I realized my mistake after about 2gb had been shredded (out of 2.7tb raid volume). what is the ...
1
vote
1answer
25 views

How do I prepare new drives for use in software raid?

Normally, I create RAID arrays during installation, but I'm trying to add an array to an existing system. The OS (Mint16) is on its own drive. I've added two brand new physical drives to the machine, ...
1
vote
1answer
98 views

mount mdadm disk without partition table

I've a debian installation and during the installation I had made 3 mdadm raid disk: swap, root and home. I had done it with partman and it had made the mdadm disk without partition table. Now I want ...
1
vote
1answer
1k views

Problem with former RAID hard drive settings in Linux Mint 17

I'm new to Linux, just installed Linux Mint for the first time. I have two hard drives which were previously in a RAID configuration. Now before I have installed Linux I've changed them to individual ...
1
vote
1answer
242 views

How to rebuild a two drive raid 1 array on Linux?

I need to rebuild a two drive (160x2) raid 1 (mirror) array. It was an Intel raid from a 7 year old Dell computer (Windows). Both drives are assumed to be functioning. The raid was created with an ...
0
votes
1answer
17 views

How to make Drives visible to OS using MegaCLI / MegaRAID not puting them in to RAID at all?

So I have 12 [12:0-12] drives that are "Unconfigured Good" as WebBIOS would say. They are not in any virtual drive span or drive group. I want to use software ZFS RAID instead of hardware one. How to ...
0
votes
1answer
23 views

How to automatically check for failed hard drives in RAID array?

We've got a couple of servers in-house containing hardware RAID5 and RAID6 arrays with 8-15 disks each. What's the easiest way to automatically check for failing hard drives using a script so that ...
0
votes
1answer
46 views

Where to install GRUB?

I am running Ubuntu 14.04 on a remote server. It's the only OS installed. I need to be super-cautious before rebooting the machine since KVM access to the server is quite tricky. During a GRUB ...
0
votes
1answer
72 views

File transfer between SSD and RAID array uber-slow

It's really simple: this server has an SSD for the main drive, and a RAID array (mdadm) for storage. Intermittently, it has a problem writing to the array: the write speeds slow down to the point ...
0
votes
1answer
166 views

If MBR is broken, how to fix on RAID + LUKS encryption?

Problem: After HDD failure in a Software-Raid Mirror Debian does not boot. Only black screen with blinking _ Debian Setup: Within the raid I have a complete system encryption with luks. I am not ...
0
votes
1answer
75 views

Recovering a (not yet created) RAID5 with URE (Unrecoverable read errors)

I wan't to create a RAID5 array at home, the OS is Linux (Kernel 3.15.7) and the array will be created with mdadm. I wan't to create the array with eigth or ten 1TB discs. Let's assume a single drive ...
0
votes
1answer
56 views

software raid priority (systemtap)

I'd like to know on which priority software raid works (level 1 if it matters). So I wrote simple systemtap script to do the job, but I'm not sure if I have done it correctly. [root@asus-ux21e ~]# ...
-1
votes
1answer
128 views

How can I track virtual Disk device to physical slot?

I'm kind of new working with Unix (Ubuntu). I managed to install Ubuntu on RAID1 and mounted 3 RAID 0 drives. I have a 9271-8i storage controller: RAID1 (sda) - Unix installed RAID0 (sdb) RAID0 (sdc) ...
0
votes
0answers
300 views

How to write to RAID 1 disks on Raspberry PI

I'm using Arch Linux on my Raspberry Pi, though I'm not sure that's relevant. I followed this tutorial to set up a RAID 1 array with 2 USB HDs. I then mounted the array (md0) in /media. What I ...
0
votes
0answers
450 views

mdadm raid 5 missing partitions after reboot

I had a working raid 5 array that had a whole debian install on it (I set it up during a debian install). I'd been using it a couple of days, all was fine, but since I created it during debian ...
0
votes
0answers
87 views

Change Initramfs script

I made RAID 0 by mdadm'ing partition located on dmraid VIA VT6421 and Western Digital hdd. Installed Ubuntu on that RAID. Now, when I boot, I get (initramfs) ash prompt. There, I have to write mdadm ...
0
votes
0answers
603 views

Linux won't install on RAID set: disks “contain BIOS RAID metadata, but [are] not part of any recognized BIOS RAID sets”

I plugged a Q-Tec 340R ATA-133 IDE RAID card, with two IDE connectors and support for up to four IDE drives, into an old P4 machine, attached two hard drives and managed to set up RAID0 and install ...
0
votes
0answers
942 views

How do I set up raid0 using extra two drives (not the install drive)?

I have been looking around online for a suitable tutorial to help me set up a raid0 across two (or more) drives, but not moving the actual installation of Mint onto that raid setup (I have that on a ...
0
votes
0answers
290 views

Using device node of host bus adapter to send ioctl calls to monitor RAID status

I am interested in determining the status of a RAID array on my system (using Debian, and Intel ICH10R sata RAID controller = fakeRAID). What I have learned so far is that: I can use CSMI I/O ...