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RAID Died While Swapping Out A Failed Drive?


At startup I got a blue-screen stop error "INACCESSIBLE_BOOT_DEVICE" with a note to CHKDSK /F. RAID 5 in my server is provided by a LSI controller. Removed 1 vmdk, reboot, verified only sda, shutdown, added 1 new 10GB vmdk, duplicated patitions, verified partitions, rebuilt array, perfect.Next: to add converting existing single disk install to RAID1 array.

From: And when I did fdisk -l again I saw[[emailprotected] ~]# fdisk -lDisk /dev/sdb: 1000.2 GB, 1000204886016 bytes255 heads, 63 sectors/track, 121601 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes http://hcsprogramming.com/raid-1/two-raid-0-and-one-non-raid-drive.php

Long Live mozRank Next Blog2011 Website Browser Statistics» Raid 5 Recent Articles: The problem with unique top level domains (tld) Don't Make These Mistakes in Your Search Engine Optimization SmarterMail Receiving One HDD suddenly found damage. Depending on the size of the partition, the re-sync could take a few minutes to a few hours. It details specs and has nice pictures of the case. view publisher site

Replace Raid 1 Drive With Larger Drive

one of the hard disk was faild , but still the server is working fine in one hard disk , I add a new hard disk with the same size but Reply Link Nandish Kumar June 1, 2011, 4:54 pmIn our office we have two diff DC (domain controlllers) in diff locations with diff Oraganstion Units, I want to import 1 OU Total mess. The next and final step is to add all of the new partitions to the existing RAID arrays.

  1. I have used your guide twice now with great results, once for a failed hard drive, and once because I took one drive out and booted it on another identical computer
  2. Err..
  3. Thanks again.

    From: ObiDrunk Reply first, ty, this its a very complete tutorial, cost a lot find info like this on the web.
  4. All information seems to refer to a slave disk failure /dev/sdb.
  5. I had a raid 6 fail :( permalinkembedsaveparentgive gold[–]scriptmonkey420Jack of All Trades 3 points4 points5 points 2 years ago(0 children) I think they're all just Dell branded and customised LSI chips.
  6. The disks were connected to connected to a AMD SB710 controller and the server was running Centos 5.7I did have problems getting the system to boot from sdb ( fixed by
  7. How to fix?
  8. I'd suggest testing your BBUs that are flagged as "Bad" in another controller, to see if they are actually fine.
  9. Do NOT do any of this until you get the single good HDD settings correct, if you add the wrong drive to a different array you will wipe your drive!!Remember that
  10. Well it turns out my setup saved me a potential restore from backups because one of the drives looks like it failed as I am getting an: 'Error occurred (0)' on

So you do not Ghost RAID, you Ghost DATA. Lately I've been thinking - what if a RAID card dies? Software RAID has only a single disadvantage: No battery for write cache. Raid 1 Hard Drive Failure Althouth this paper is dated 2003 and the author refers to 'raidtools' instead of 'mdadm', there are two very useful sections.

I actually keep a spare supermicro motherboard and RAID controller for our primary DC. one of the disks failed and I replace it with a new identical one. Reply Link Larry October 7, 2012, 7:18 pmDumb question here. http://serverfault.com/questions/240170/replacing-a-dead-hard-drive-in-raid-5-with-a-different-type How do i replace my HDD with an SSD RAID0 on the MSI GS70?

When the drive has achieved its normal spin rate, data recovery to the replacement drive begins automatically (as indicated by the blinking Online/Activity LED on the replacement drive) if the array Rebuild Raid 1 At grub prompt, type 'root (hd0,2)' when the argument is the path you've found at the point 3 7. and if i replace these three with new one is system work or not? There are two methods; hardware or software.

Raid 5 Replace Failed Drive

permalinkembedsavegive gold[–]BloodyIron 0 points1 point2 points 2 years ago(0 children)If you use ZFS, it won't matter. Similar has happened to a good friend of mine. Replace Raid 1 Drive With Larger Drive Disk /dev/sdb: 2000 GB, 2000396321280 bytes 255 heads, 63 sectors/track, 243201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 Mdadm Replace Failed Drive Raid 5 If you remove a file by error or purposefully from the array and there's no backup, then what?

As much as I love ZFS and use it in production environments, it is NOT a panacea of data integrity. http://hcsprogramming.com/raid-1/raid-1-w-hard-drive-failure-question.php He has been writing about and developing on Linux for over 10 years and is a veteran Mac user. I think the Dell PERC's are PCI cards. Once we installed the new drive everything rebuilt, but the Array Disks still showed in a degraded state. Raid 1 Hard Drive Replacement

Some things that may seem like an issue may or may not be, even. Will these commands work for a RAID5 setup? Thanks again!

From: Paul Bruner Reply I think the auther needs to put in how to find the physical drive though. Check This Out I suggest you back up the data on the system ASAP .

I also suggest that you have regular backups available as a RAID card can bring down its disks too. Rebuild Raid 1 Without Losing Data And when that failure happens, a warranty does not mean that a new card is magically teleported to replace the failed one, without any downtime. Whether it's hardware or software that's doind the resync doesn't matter, it's always the drivers that are busy.

permalinkembedsavegive gold[–]TenaciousBLT 0 points1 point2 points 2 years ago(0 children)Option 2 - you can be up in a shorter amount of time.

permalinkembedsaveparentgive gold[–]ontheroadtonull 1 point2 points3 points 2 years ago(1 child)Option Omega---A thermonuclear device hidden on the premises. permalinkembedsavegive gold[–]DiscoDave86VMware/Storage Consultant 6 points7 points8 points 2 years ago(2 children)I'd go for option B With modern hardware I've normally retired servers before they get to the point where a RAID card fails If that data corrupts, you restore it from a BACKUP/IMAGE. Raid 5 Hard Drive Failure How to fix?

As for manufacturer, you do not need that same manufacturer but it is strongly recommended.I have personally tested with different drive sizes and manufacturer and have had no problems rebuilding the So when it was all done these were the steps to get it out of degraded mode on the PERC 4/di controller array disk. You need to configure a RAID 1 with the drives. this contact form Only after I positively confirmed swapping drives around doesn't cause problems would I move forward with that rule in mind.

If you have a box die on you and have a spare you can for instance try swapping the disks and see if they import correctly into the new controller. permalinkembedsaveparentgive gold[–]jadedargyle333 1 point2 points3 points 2 years ago(0 children)This is the first time I've seen throws corrected. Your PCI version I believe is the same chipset / driver, but may have different software. But of course, you should still be backing up the data on a regular basis like others have said, just in case you end up with a corrupted RAID or multiple

Last week one of the drives starting "clicking", and when tested independently has died. If I pull the bad drive out, plug this other drive in…am I going to have a problem or will it rebuild to the existing RAID5 config? Our data center had a power blip and the AC stopped working. I partitioned the new one with gfdisk but could not add it to the array.

Next we add /dev/sdb1 to /dev/md0 and /dev/sdb2 to /dev/md1: mdadm --manage /dev/md0 --add /dev/sdb1 server1:~# mdadm --manage /dev/md0 --add /dev/sdb1mdadm: re-added /dev/sdb1 mdadm --manage /dev/md1 --add /dev/sdb2 server1:~# mdadm --manage Then you restore the backup image to your server (using boot disk from Acronis). Continued on the step to add sdb2 to md1 and sdb3 to md2 (use cat /proc/mdstat to see mapping) Resync of disk started beautifully.  Know i'm going to clean my house All rights reserved.

You could mount it in one of your open bays and initialize it. A slight addition to the original plus the excellent comments: When you replace a raid component disk with a brand new disk, keep in mind that it is blank and has it's always RAID roulette when an array controller dies and you have to replace it. So you want to be a sysadmin?

especially the sfdisk trick is really clever! This likely gives the same end result as using --force, but people may prefer to use --Linux instead.

From: Peter Reply Excellent description which also works pretty good on a Reply Link Muthu November 11, 2010, 9:07 ami want some clarification from raid 5 if I have 8 hard drives that connected by raid 5 technology two of them had break Reply Link Kundan January 8, 2015, 1:30 pmI also agree with Aymen, as in RAID 5, two out of three disks down means there is no disk left where data can