-snip
Does anyone know for sure which was the last DASD subsystem that cared
about Rotational Positional Sensing (RPS) values?
---unsnip---
IIRC, that would be the 3390 (real, not emulated). To my knowledge, none
of the RAID
In a message dated 7/24/2007 11:16:19 A.M. Central Daylight Time,
[EMAIL PROTECTED] writes:
-snip
Does anyone know for sure which was the last DASD subsystem that cared
about Rotational Positional Sensing (RPS) values?
---unsnip
Does anyone know for sure which was the last DASD subsystem that cared about
Rotational Positional Sensing (RPS) values?
I would guess 3390-SLEDS connected to 3990-6's.
-
Too busy driving to stop for gas!
--
For IBM-MAIN
Using a sector number of x'00' effectively disabled RPS on devices
that did care.
Edward Jaffe wrote:
Richards.Bob wrote:
Do you know of any DASD subsystem that does not publish RPM information?
I thought not. They still care. grin
But kidding aside, I would suspect the last time it
In a message dated 7/24/2007 1:12:43 P.M. Central Daylight Time,
[EMAIL PROTECTED] writes:
Using a sector number of x'00' effectively disabled RPS on devices that
did care.
Not true. It forces the controller to position the track at index point,
the very beginning of the track. A
Actually x'00' disconnects until position is just before index point so
the following search Id starts with
index point count at 1, maximum scan for the Id will be one revolution
till next time index point is detected.
Using x'FF' will not disconnect and search id starts at current
In a message dated 7/24/2007 1:43:48 P.M. Central Daylight Time,
[EMAIL PROTECTED] writes:
Actually x'00' disconnects until position is just before index point so
the following search Id starts with
index point count at 1, maximum scan for the Id will be one revolution
till next time
Does anyone know for sure which was the last DASD subsystem that cared
about Rotational Positional Sensing (RPS) values?
--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[EMAIL PROTECTED]
http://www.phoenixsoftware.com
Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Edward Jaffe
Sent: Monday, July 23, 2007 7:30 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Rotational Positional Sensing (RPS)
Does anyone know for sure which was the last DASD subsystem that cared
about Rotational
Richards.Bob wrote:
Do you know of any DASD subsystem that does not publish RPM information?
I thought not. They still care. grin
But kidding aside, I would suspect the last time it really mattered it
would be a real 3990-3390 SLED.
Am I missing something in your question here?
I assume
In a message dated 7/23/2007 7:16:04 P.M. Central Daylight Time,
[EMAIL PROTECTED] writes:
I assume RPS sector numbers are *ignored* for ESS and newer devices.
Some are definitely NOT ignored and some other values may be ignored. The
ones that are not ignored are the ones that are
Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Edward Jaffe
Sent: Monday, July 23, 2007 8:14 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: Rotational Positional Sensing (RPS)
Richards.Bob wrote:
Do you know of any DASD subsystem that does not publish RPM
information?
I thought
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