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0
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1answer
75 views

How to auto-start Degraded Software RAID1 under Debian 8.0.0 on boot?

If you remove a component HDD from an array, it drops into a "busy box" shell under "(initramfs)" saying something similar to "cannot mount root device" as the RAID1 array becomes "inactive". It is ...
1
vote
2answers
68 views

After power loss, my RAID config changed, some drives marked as foreign, but all data still there

I have a Perc 5/i in a Dell Precision 590. The controller DOES have a battery backup, and the controller reports that its status is healthy. There are five 1TB SATA drives connected to the controller. ...
2
votes
2answers
143 views

P4500 Lefthand SAN report degraded on one node when all disks are health “NORMAL”

I am experiencing a strange condition with our HP G1 lefthand SAN cluster. The cluster consists of 4 nodes across two sites, two nodes ( node 1 & 2 )in each site are RAID5 across the pair, and ...
0
votes
0answers
52 views

mdadm - unable to reconstruct the raid1

When restarting my server, it (sometimes) fails to reconstruct my RAID-1 array (2 disks). My server, a 10-year-old computer, often changes sda into sdb or sdc which seems to annoy mdadm. When it ...
0
votes
1answer
334 views

Mac Pro says RAID degraded but all drives showing green status

OSX 10.9 - RAID Utility says RAID array is degraded but all drives are showing green All started after error log Drive 3:5000c5004e189ddf missing - Previous drive status was inuse Now getting ...
11
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3answers
4k views

How to resolve virtual disk degraded in Windows Server 2012

I am using the new Storage Spaces feature in Windows Server 2012. I have the following disks: FriendlyName CanPool OperationalStatus HealthStatus Usage ...
0
votes
1answer
949 views

3ware raid controller, unit unusable, several degraded disks

I was switching the disk drives in my server, running RAID 6 on 5 disks on a 3ware 9650SE controller, for newer disks and have run into a problem. The two first disks went fine, I took out one disk ...
5
votes
1answer
152 views

what harm can writeback caching have on a degraded disk array?

At work I administer several machines using (real) hardware raid controllers (with battery backed write caches), and these have the nasty habit of falling back to writethrough behaviour when an array ...
0
votes
1answer
80 views

Artificially degrade apache2 performance to meet real world conditions

I want to degrade my apache2 development server performance (it's on a local network) to simulate real world conditions (lag, slow connections, random timeouts...). Is there any apache mod to do ...
5
votes
2answers
2k views

NAS device claims drive in a RAID is degraded but S.M.A.R.T. says it is fine

I have a Synology DS213 with two 600GB drives in RAID 1. Last night the device reported that my second drive had become degraded and that I should replace it. When I ran a extensive S.M.A.R.T. test ...
0
votes
1answer
10k views

Virtual Disk Degraded

There is a physical DC with a Raid 1 Mirror, 2 Physical Disks, 500GB each. Dell Server Administrator is installed on the DC, and is reporting both physical disks are fine, online, in a good state etc. ...
0
votes
1answer
499 views

Ubuntu server boot degraded raid

I've installed Ubuntu 12.04.1 in a new server and set up the 4 hard drives with 3 RAID 1 devices, the configuration is such that the first two drives have md0 (swap space) and md1 (/) with the third ...
1
vote
1answer
355 views

Is there a way to prevent a SW RAID 1 from degrading?

I have a number of Debian servers in a datacenter and from time to time I notice that the software RAID 1 was degraded. While the re-sync process starts automatically and I don't lose any data I find ...
2
votes
2answers
2k views

Raid1 degraded after every reboot

After setup, cat /proc/mdstat output looks like this: proxmox:~# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sdc2[1] sdb2[0] ...
9
votes
5answers
4k views

Boot Debian while RAID array is degraded

Recently, I came across Ubuntu Server install. During install, it asked me whether or not to allow booting system from degraded RAID array (probably because I installed system onto RAID1 /dev/md0 ...
2
votes
2answers
1k views

Debian, mdadm, Degraded Array, disk became spare after re-added

Tonight i received a message generated by mdadm on my server: This is an automatically generated mail message from mdadm A DegradedArray event had been detected on md device /dev/md3. Faithfully ...
5
votes
4answers
2k views

Ubuntu raid - replacing drive?

I've set up software RAID1 with the latest Ubuntu version - 11.04 using two 250GB harddrives which initially worked great. Tried to unplug both and computer still started with degraded raid status - ...