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Obsolete Releases => SME Server 7.x => Topic started by: wbs316 on May 26, 2009, 06:37:03 AM

Title: General raid operation queries with SME
Post by: wbs316 on May 26, 2009, 06:37:03 AM

I was hoping someone may be able to answer queries I have with regard to raid operation on SME.

Assuming that the server has two IDE drives installed if either of the drives develop problems does the user admin automatically receive an email with regard to this or do you need to regularly check a report?

If the primary IDE drive fails completely will the system continue to run on the secondary IDE drive?

Title: Re: General raid operation queries with SME
Post by: jester on May 26, 2009, 08:57:54 AM

Please search:
http://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter4#4.3._Hard_Drive_Configuration (http://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter4#4.3._Hard_Drive_Configuration)
http://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter5 (http://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter5)
http://wiki.contribs.org/Raid (http://wiki.contribs.org/Raid)

...and all your questions will be answered!
HTH.

Title: Re: General raid operation queries with SME
Post by: mr_martinez on May 27, 2009, 01:11:25 AM

  After logging in as root type the following command   
   
  watch -n .1 cat /proc/mdstat

  This will show you if your raid is up. Ideally you want to see  [UU] next to your active blocks. If you see [ _U] then that disk is down. As far as the system continuing to run after failure  As long as you are running RAID 1, 5 , or 10  and only one disk fails. You should be fine because there is redundancy.  RAID 0  however does not. If this is being used in a business environment it is a good idea to have a spare installed in case of disk failure, a RAID will begin reconstructing the mirror immediately after detecting the fault in the drive.