Re: No performance increase from 3590 B11 to 3590 E11

[Bernd Schäfers <bschaefers@xxxxxxx>]

Hi Paul,
We too are a bit disappointed after our 3590 B -> E upgrades. Our save
rates are around 50 -55 GB/hour on our 7x hardware with 6501 controllers.
Definitely faster than the B-models, but no, not 50%. I've heard of
other locations getting over 110 GB/hour with the 8x hardware, HSL and the
2749.

Snipped from an IBM Support Line doc:
"Current ISeries 400 systems using the 3590-B Ultra drive or Model E, may
get up to a 20% increase in performance over the 3590-B SCSI-2 (up to
60GB/hr or 17MB sustained compressed data rate*) if all of the following
conditions exist:

-- They are using OS/400 V4 hardware.
-- They are using IOP adapter FC 6534 or 6501 (not 2729).
-- The current OS/400-3590 SCSI-2 can achieve maximum sustained performance
today of 50GB/hr (typically with large files).*"

Best,
Bernd
----- Original Message -----
From: "Talbert, Jr., Paul" <PTalbert@iss2000.com>
To: <MIDRANGE-L@midrange.com>
Cc: "Avedissian, Edward" <EAvedissian@iss2000.com>
Sent: Thursday, February 01, 2001 4:07 PM
Subject: No performance increase from 3590 B11 to 3590 E11


> I currently have a model 730 running V4R4 and have currently upgraded from
a
> 3590 B11 to a 3590 E11. The drive is attached to a 6534 SCSI SPD card.
I'm
> not seeing the promised 50% increase on my full system backups. The
backups
> have run for 10 hours on both the B11 and E11.  IBM states that the E11
has
> a faster data transfer rate of 14mbs vs 9mbs for the B11.  Has anyone
> experienced this problem? Any suggestions?  Thanks
>
> Paul Talbert
> Integrated Solutions & Services, Inc.
> (908)534-7831 ext 25
> email: ptalbert@iss2000.com
>
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