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3
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1answer
70 views

How to restore RAID5 Array

I have a RAID5 array consisting of 3 identical 2TB drives. Suddenly GRUB wouldn't boot anymore and gave the error out of disk. Eventually booted a livecd and ran some mdadm commands: mdadm --examine ...
3
votes
1answer
237 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 ...
2
votes
1answer
924 views

mdadm: /dev/md0 assembled from 3 drives - not enough to start the array

I had a drive in my raid5 fail a while back. I believe the problem was due to a power failure at the time, but originally thought it might be the hard drive controllers on the motherboard. (this is ...
1
vote
1answer
28 views

RAID-5 array degraded, seems like >1 failure; can I recover without data loss?

I just installed Fedora 22 fresh, onto system with existing RAID-5 array. Five drives. Kernel reported device errors overnight, the 3 TB XFS filesystem was unmounted, and now after a reboot the ...
0
votes
1answer
21 views

RAID5-4 devices with 2 failed devices: hope to retrieve data?

I built a RAID5 array with 4 2Tb devices a few month ago. - I used LVM2 to build partitions. - I also used GRUB2. - Finally I installed Debian. For an unknown reason the RAID failed. The BIOS "see" ...
0
votes
1answer
24 views

Cannot mount RAID 5 disks

I am trying to mount 3 x 2TB RAID discs from an ubuntu server, but I cannot. I know that these disks were used in a server using RAID5. I tried to mount them using mount -t but I was unable to specify ...
0
votes
1answer
40 views

Redhat 5.11 Just showing 1.5TB Storage

We purchased new supermicro server with 3*3TB HDDs. Now from Hardware Raid controller i created Raid 5 .So the total use able storage is 5TB something. But during installation Redhat is just showing ...
0
votes
1answer
1k views

Install RHEL 5.7S on machine with 4TB disks

I'm getting errors about GPT when installing OS using kickstart. The Dell R720 has 8x 600GB SAS. I can't figure out what to configure in BIOS and kickstart file. In BIOS, there're boot options of ...
2
votes
0answers
332 views

RAID5 Arrary disappeard with no HW or SW changes made

I have a R-Pi running XBMC (Linux CaribNAS 3.10.24 #2 PREEMPT Mon Dec 23 05:18:12 UTC 2013 armv6l GNU/Linux) with a 3 disk raid 5 array that has been working up till yesterday when is stopped running ...
2
votes
0answers
109 views

Rebuilding a raid5 array from images

I have an 8 disk possibly raid5 array that was part of a fried NAS, the whole thing uses pdc20265 promise chips and some kind of embedded system on a small ide board. No clue if the board is anything ...
1
vote
0answers
24 views

Arch Linux Server: How to spin down HDDs in a BTRFS Raid5 configuration?

This is my first question here; after extensive research I had to reach out for help. I’ve build a home server based on Arch Linux. It basically has two main purposes: running a Plex Media Server and ...
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0answers
9 views

Can 99-raid-check weekly cronjob be scheduled to run in increments?

I have a raid5 on UNIX. Can I somehow automatically schedule the weekly 99-raid-check to run in increments? During the day it affects the performance, so I don't want it to be doing its check during ...
1
vote
0answers
70 views

RAID5 needs drive to be added every reboot

I have a 3 disk RAID5 mdadm array total 4TB on an Ubuntu Server 14.04.3 LTS. Since a kernel panic caused by an already replaced device unrelated to the array, after every reboot the array starts [UU_]...
1
vote
0answers
77 views

mount LVM RAID 5 with missing disk

I have a software RAID 5 (LVM, XFS) with three 2 TB drives. Is it possible to mount the RAID with one missing drive (instead of having to rebuild it)? How would this be done? [Edit] My /etc/fstab ...
1
vote
0answers
349 views

Recover data from a BTRFS RAID5

I have a BTRFS RAID5 setup (no mdadm) with four disks (the fifth failed). Now I am trying to recover the files but as soon as I try to rsync the files over to another disk, the system hangs after ...
1
vote
0answers
824 views

Help with lost software RAID5 on CentOS 6.5

I've been searching for hours and giving up / too scared to delete all my data. I have a file server running CentOS 6.5 which has 4 WD RED 2TB drives (all > 1 year old) in software raid 5 with mdadm, ...
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0answers
26 views

Help needed with Raid 5 that was working OK

My parents had a Netgear RN 104 that stopped working properly, they messed with some settings, messed it up and gave it to me to fix. It has 4 x 4tb drives in Raid 5. I've used mdadm before to ...
0
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0answers
51 views

Can I make a degraded RAID-Z on NAS4Free?

Here is my situation. Old whitebox PC. I planned to change this to home NAS with three 1TB HDDs. But I found out one of them needs to be replaced. So only two drives are available now. Third ...
0
votes
0answers
271 views

How to put in new disk in a MegaRAID SAS 2108 HW RAID card?

It's in RAID5, we already have 4 disk in it. 1 is a spare. 01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05) with 4 disks. Question: How can we put in ...
0
votes
0answers
603 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 install,...