Paul,
we do use SSO, with one master and one media server, but we also throw ndmp in
the mix. We do indeed limit the total count of our master and media servers to
the drives actually available, 4 drives on the master and 6 on the media server.
However, since the two servers can see all 10 drives they just choose whichever
drive is available. As long as the policies are set to use "any available
server" then the jobs will go to whichever one can grab a drive. If all the
drives are busy the jobs go into the queue. Our point to doing it this way
was to split the load over two separate gig-e pipes to the fiber where the the
drives live in such a way that NBU took care of
the details of how the data gets there. With NDMP we have it set to use
paths available only on the master server, that's just to keep it from confusing
the hell out of me. (Since we use 6mp2 ndmp allows us to use
SSO)
David
Spearman
County
of Henrico,Va.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Keating
Sent: Tuesday, May 30, 2006 3:03 PM
To: veritas-bu@mailman.eng.auburn.edu
Subject: [Veritas-bu] SSO questionAssuming you have several tapes drives share among several media servers.ie, 10 drives and 3 servers.if you configure each server to see all 10 drives and then configure a STU on each server to use a max of 4 drives, you will encounter situations where there is demand for as many as 12 drives......In the instance where 2 of the media servers each reserve 4 drives and the third server has only 2 drives available to it, does this cause all the jobs queued on this third server to fail with status 134??? I'm thinking that CAN'T be the case....if so, SSO would be pointless as you would only be able to create STU's to use a total global max of the number of physical drive you have, in which case you may as well do fixed assignments, and not SSO.Sorry if this seems like a stupid question....I'm not using SSO at the moment, and don't have the resources to suss it out in the lab, and I'm expecting to be deploying two additional media servers in June.Paul
_______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
