Path: utzoo!mnetor!uunet!husc6!mit-eddie!ll-xn!ames!aurora!labrea!agate!ucbvax!MUCSD.BITNET!9070NATS
From: 9070NATS@MUCSD.BITNET (Keith Natschke)
Newsgroups: comp.os.vms
Subject: volume sets
Message-ID: <8802100701.AA17072@ucbvax.Berkeley.EDU>
Date: 28 Jan 88 15:58:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 28

In light of all the discussion about volume sets, I would like to describe
our experience with them. Although I don't recommend them to everybody,
we have had some success increasing RMS throughput by utilizing a volume
set.

We have one volume set consisting of 2 RA81 disk drives dual ported
to 2 HCS50's. The set is shared by 3 different applications, student financial
aid, student fee accounting and library serials. The financial aid and fee
accounting use several large indexed files. We took advantage of the volume
sets by breaking the files into multiple areas, one area for the data and
one for each index. We then placed the data area on one volume and the index
area(s) on the other volume. This resulted in a dramatic decrease in direct
I/O's and connect time when processing these files.

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MM      MM   UU      UU         Keith S. Natschke          Analyst/Programmer
MMM    MMM   UU      UU         Marquette University
MMMM  MMMM   UU      UU         Computer Services Division
MM MMMM MM   UU      UU         Systems and Programming
MM      MM   UU      UU         517 N. 14th Street
MM      MM    UUU  UUU          Milwaukee, WI  53233
MM      MM     UUUUUU           Phone: (414) 224-3765

Marquette    University         BITNET:   9070NATS@MUCSD
                                INTERNET: 9070NATS%MUCSD.BITNET@CUNYVM.CUNY.EDU

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