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March 2003, Week 4

HP3000-L@RAVEN.UTC.EDU
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Subject:
OT: Volume sets on MPE
From:
Denys Beauchemin <[log in to unmask]>
Reply To:
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Date:
Tue, 18 Mar 2003 12:46:15 -0600
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I apologize for the on-topic post.

I recently had occasion to chat with an MPE site that has many disk drives in a single volumeset, MPEXL_SYSTEM_VOLUME_SET.

I suggested they might want to break up the storage, which is on a dozen or more disk drives, (no arrays,) into two or more volume
sets.  I suggested using about 4 of the smaller disks for MPEXL... and to put the bigger ones together in another volume set.

Several years ago (12+years) I gave a paper on volume sets and the benefits of using them.  I mentioned increased system resiliency,
enhanced system performance and easier management.

I have two questions:
1- Is the performance boost still valid in 7.5?  I believe the checkpointing algorithm has somewhat changed in the last 12 years.
2- Are there other benefits for using multiple volume sets that I might have missed?


Denys

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