Solved

Why doesn't the degraded RAID 5 array rebuild after replacing a failed drive?

Posted on 2008-10-12
7
657 Views
Last Modified: 2013-11-14
Came in tonight and our Windows SBS 2003 server was beeping, and had errors about a missing RAID member.  Attempted to access while in Windows, and the system locked up.  Replaced the failed ("missing") drive with an identical spare, and the degraded (not failed, yet) logical RAID array would not accept the drive and rebuild.  I formatted, initialized, assigned hot spare, to no avail.  I am unable to boot into Windows at this time.
0
Comment
Question by:wega1985
  • 4
  • 2
7 Comments
 
LVL 6

Expert Comment

by:vojans
ID: 22700542
You can usually access RAID controllers while POST (during boot up, there is a message "press F# to..."), so see what you can do from that menu...
0
 

Author Comment

by:wega1985
ID: 22700557
Yes... you hit Ctrl + A to get into the CERC BIOS.  That is where I am able to see that it's not accepting the new drive into the array, and rebuild from there.  It just maintains that an array member is missing.
0
 

Accepted Solution

by:
wega1985 earned 0 total points
ID: 22703070
OK... The reason is, according to Dell Support, that there are tiny variations in drives.  Even though this is an identical drive, down to the chipset revision, for whatever reason, the CERC card didn't see the new drive as having enough space to rebuild onto.
0
Give your grad a cloud of their own!

With up to 8TB of storage, give your favorite graduate their own personal cloud to centralize all their photos, videos and music in one safe place. They can save, sync and share all their stuff, and automatic photo backup helps free up space on their smartphone and tablet.

 
LVL 63

Expert Comment

by:SysExpert
ID: 22703579
DOuble check that it is indeed a identical SIZE - even identical model numbers may not be the same size if manufactured in different locations.

If it is even slightly smaller, it will not work.

Also double check the cabling, and try to see that it is spinning up.

 
I hope this helps !
0
 

Author Comment

by:wega1985
ID: 22703598
Yeah, identical size according to the specs, even the CERC card!  It was spinning up and detecting, the rebuild just wouldn't "kick off" no matter what we tried.
0
 
LVL 63

Expert Comment

by:SysExpert
ID: 22704000
Then put in a bigger drive and see if it starts rebuilding.

In the meantime consider  a windows install on a separate drive , just to get things up and running.


I hope this helps !

0
 

Author Comment

by:wega1985
ID: 22704056
I did!  And it nearly wrecked the array... We have 74 GB 10K RPM raptors in there, and I popped in a 80 GB 7200 RPM drive, and although it immediately started rebuilding, it caused the array to eventually go into failed state.  Luckily, we were able to remove that 80 GB and get the 2 remaining 10K drives back into an optimal state.  Right now running on the two drives awaiting replacement that it hopefully accepts...
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A quick step-by-step overview of installing and configuring Carbonite Server Backup.
By default, Carbonite Server Backup manages your encryption key for you using Advanced Encryption Standard (AES) 128-bit encryption. If you choose to manage your private encryption key, your backups will be encrypted using AES 256-bit encryption.
This tutorial will walk an individual through the process of configuring basic necessities in order to use the 2010 version of Data Protection Manager. These include storage, agents, and protection jobs. Launch Data Protection Manager from the deskt…
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now