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Partition alignment HDS

Created: 18 Jun 2013 • Updated: 31 Jul 2013 | 2 comments
This issue has been solved. See solution.

Hi,

I've just realized that newly created volumes on our HDS storage is not aligned, although the disable track alignment is not checked when the volume is created.

Does anyone know why this happens and how we can verify if this is the actual case?

We're running SFW 5.1 SP2 and DDI Q4 2011 on Windows 2008 R2 SP1

All volumes that was previously located on a NetApp is listed as aligned.

/Per

Operating Systems:

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mikebounds's picture

You can check setting in "Track alignment" from SFW control panel so check:

  1. "Enable track alignment support" checkbox is ticked
  2. Your array model is listed
  3. Tick "Show Free Regions" if you want to see region information in the Disk View GUI due to track alignment
Mike
 
 

 

 

UK Symantec Consultant in VCS, GCO, SF, VVR, VxAT on Solaris, AIX, HP-ux, Linux & Windows

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SOLUTION
Douglas Snyder's picture

Hello,

Please also ensure you have the correct ASL loaded for your HDS array.  Dynamic Multi-Pathing provides the informaiton the volume manager needs in order to correctly align new partitions.  If the correct ASL is not loaded then you will not have a properly aligned partition.

You can locate and download the correct ASL here:

https://sort.symantec.com/asl

Doug Snyder

Doug Snyder

Technical Architect 5

Columbus, Ohio USA

SOLUTION