Dave,

I recently upgraded one of my clients from B's (SCSI) to H's (fibre) on an
AIX server.  We had some initial quirks, which seem to have been cured by
firmware.

Aside from that, we have seen an increase in the number of tapes getting
flagged readonly, which we expected due to the increased track density.

We have NOT seen any significant increase in speed, despite the marketing
claims.  We are, however, getting 3X as much data on a tape.

-Lloyd

On Tue, 19 Nov 2002 15:13:36 -0800
"Pearson, Dave" <DCPearson AT SNOPUD DOT COM> wrote:

> Is anyone using the H1A drive and if you do... How is it?
>
> David C. Pearson
> IS Production Support Analyst
> System & Network Service
> Snohomish County PUD # 1
>  <<...OLE_Obj...>>
> Phone: 425.347.4420
> Pager:  425.290.0944
> FAX:     425.267.6380
> E-mail: DCPearson AT snopud DOT com <mailto:DCPearson AT snopud DOT com>
>
>         -----Original Message-----
>         From:   James, Phil [SMTP:Phil_James AT CALPERS.CA DOT GOV]
>         Sent:   Tuesday, November 19, 2002 3:11 PM
>         To:     ADSM-L AT VM.MARIST DOT EDU
>         Subject:        Re: 3590 Tape Drives
>         Importance:     Low
>
>         I experienced some problems with the B1A drives also, but we
>         caused
> some of
>         our own problems.
>         We were running them 23 out of 24 hours every day.
>         We cured the problem by going to the E1A and adding more tape
> drives.
>
>         The different between the drives is the B1A are 128 track, the
>         E1A
> are 256
>         track and the H1A are 384 track drives.
>         You gain one third capacity for every increment you go up on
>         your
> drives.
>
>         We current have a total of 30 E1A tape drives between the open
> systems
>         backup and the MVS systems native drives.
>         Average at the most maybe two calls per year on the same drive
> different
>         problems never the same.
>         We still have a high percentage use per day.
>
>         Philip A. James, Systems Software Specialist
>         Software Services Unit
>         Information Technology Services Division / Data Center
>         California Public Employees' Retirement System
>         Phone: (916) 326-3715
>         Fax:     (916) 326-3884
>         Email:  phil_james AT calpers.ca DOT gov
>
>
>
>
>         -----Original Message-----
>         From: Martina Sawatzki [mailto:msa AT OERAG DOT DE]
>         Sent: Tuesday, November 19, 2002 2:50 AM
>         To: ADSM-L AT VM.MARIST DOT EDU
>         Subject: 3590 Tape Drives
>
>
>         Hi,
>
>         We are working with a 3494 IBM silo with 4  drives - 3590 type B
>         -
> which
>         is connected to a RS/6000. As we are having lots of  hardware
> problems with
>         these drives we think about changing them to 3590 drives type E.
>         Does anyone have experience with this type of tape drive ? I`m
> mainly
>         interested in a kind of comparison concerning performance and
> availibility
>         between the both types B -> E.
>
>         Thanks a lot
>         Martina
>


--
-----------------------------------------------------------------
    Lloyd Dieter        -       Senior Technology Consultant
   Synergy, Inc.   http://www.synergyinc.cc   ldieter AT snrgy DOT com
             Main:585-389-1260    fax:585-389-1267
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