When your 12h goes into test mode, your host will wait until testing has
completed. We experience this problem on our 987 MPEiX 6.0 pp2. It required
that apply patches that had just superceded the ones we installed in June
'01. I don't have the patch names at hand, but the HPRC should be able to
send them to you. Otherwise, you're fast disk drive system will slow your
system to a crawl.
George Willis
Fayez Sarofim & Co
-----Original Message-----
From: James Tollerson [mailto:[log in to unmask]]
Sent: Friday, August 24, 2001 4:19 PM
To: [log in to unmask]
Subject: Re: [HP3000-L] Increase the throughput on a DLT single tape
drive ?
Chris/Cory,
The store job is the only job run during the time. Also we have a 12H
autoraid server that goes into testing mode maybe sometimes could this cause
the back up to take longer? The model Hp is 959. We are using the plan store
command.
James
> -----Original Message-----
> From: Chris Goodey [SMTP:[log in to unmask]]
> Sent: Friday, August 24, 2001 4:31 PM
> To: Tollerson, James; [log in to unmask]
> Subject: RE: [HP3000-L] Increase the throughput on a DLT single tape
> drive ?
>
> 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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