ADSM-L

server restore behavior

2006-08-18 12:23:48
Subject: server restore behavior
From: Troy Frank <Troy.Frank AT UWMF.WISC DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 18 Aug 2006 11:22:34 -0500
This is more of a curiosity question than a problem.  In a
multiple-client restore scenario where you start up say 5 restores at
once from different nodes (with 4 tape drives, and resourceutilization
set to 4 on nodes), how does the server process the request?
Technically, data from all 5 nodes are probably on a lot of the same
tapes.  Does it....

A) mount each tape exactly once, getting all data for all running
restores off that tape before unmounting.

B)  Process the restores relatively serially for each node, giving each
all 4 drives until completed.  Unmounting/remounting the same tapes
multiple times.

C)  Only give each node 1 tape drive to work with, which will
effectively ellicit behavior very similiar to option B.

Or does it do something different than any of these?


Confidentiality Notice follows:

The information in this message (and the documents attached to it, if any)
is confidential and may be legally privileged. It is intended solely for
the addressee. Access to this message by anyone else is unauthorized. If
you are not the intended recipient, any disclosure, copying, distribution
or any action taken, or omitted to be taken in reliance on it is
prohibited and may be unlawful. If you have received this message in
error, please delete all electronic copies of this message (and the
documents attached to it, if any), destroy any hard copies you may have
created and notify me immediately by replying to this email. Thank you.

<Prev in Thread] Current Thread [Next in Thread>