Fw: DASD

["John Taylor" <john.taylor@xxxxxxxxxxxxxxx>]

Correction: although the Handbook uses the term UltraSCSI, the drive table
lists the #4317 and #4318 drive units as capable of UltraSCSI2 @ 80MB/s.
Sorry for any confusion.

Regards,

John Taylor
Canada

----- Original Message -----
From: "John Taylor" <john.taylor@telusplanet.net>
To: <RPG400-L@midrange.com>
Sent: Friday, January 19, 2001 16:42
Subject: Re: DASD


> Chris,
>
> The AS/400 Handbook (V4R5) shows that the system uses an UltraSCSI
> interface, and therefore tops out at a 40MB transfer rate. Do you have any
> literature that claims a 160MB transfer rate on an AS/400?
>
> With respect to PC's, 160MB/second is available to any PC, by simply
> installing an Ultra 160 SCSI controller.
>
> As far as the error reporting is concerned, you should take a look at any
of
> the IBM Ultrastar SCSI disks here
> http://www.storage.ibm.com/techsup/hddtech/table.htm#Ultrastar . Take a
> closer look at the feature called "Predictive Failure Analysis".  In fact,
> take a close look at all of the spec's, comparing them to what information
> is available on DASD units in the AS/400 System Handbook. You might walk
> away with the same conclusion that I have -- they're the same drives.
>
> Regards,
>
> John Taylor
> Canada
>
> p.s. - This thread really belongs on Midrange-L.
>
> ----- Original Message -----
> From: Chris Bipes
> To: 'RPG400-L@midrange.com'
> Sent: Friday, January 19, 2001 13:12
> Subject: RE: DASD
>
>
> The controllers on the DASD are more intelligent and talk to the OS to
> report errors before they die completely...Does a PC DISK do that.  Also
> compare IBM's DASD 8.5G 10K rpm Ultra Fast Wide SCSI to the same PC DISK.
> There is not that much difference.  By the way, IBM's can transfer data at
> 160MB / second.  Can the PCs do that?
>
>
> Christopher K. Bipes    mailto:ChrisB@Cross-Check.com
> Sr. Programmer/Analyst  mailto:Chris_Bipes@Yahoo.com
> CrossCheck, Inc.        http://www.cross-check.com
> 6119 State Farm Drive   Phone: 707 586-0551 x 1102
> Rohnert Park CA  94928  Fax: 707 586-1884
> If consistency is the hobgoblin of little minds, only geniuses work here.
> Karen Herbelin - Readers Digest 3/2000


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