HP3000-L Archives

August 2001, Week 4

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
Chris Goodey <[log in to unmask]>
Reply To:
Chris Goodey <[log in to unmask]>
Date:
Fri, 24 Aug 2001 13:30:59 -0700
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I see about 5mb a second when using DLT7000s.

Of course, HP requires (suggests) they be on a dedicated
SCSI channel. I see as little as 4MB a second on our slowest
machines, and up to about 6mb a second on the fastest machine
with the INTER option turned on and data compression enabled
on the tape drive. The specification for a DLT7000 is only 5mb
a second (as I remember.) I usually get good compression since our
data bases have lots of empty records and lots of space filled data,
etc.

The only way I would get less than 1mb a second, would be on a busy system
running the store job at low priority, in which case 827kb/second might
be quite reasonable.

What model Hp are you running? How much memory? What is your I/O
configuration?
What store options are you using?

-----Original Message-----
From: James Tollerson [mailto:[log in to unmask]]
Sent: Friday, August 24, 2001 1:24 PM
To: [log in to unmask]
Subject: [HP3000-L] Increase the throughput on a DLT single tape drive?


Hello,
Does any one know how to increase the throughput on a DLT single tape drive?
HP3000 throughput is 827k/s on the DLT now.

James

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