So did IBM for the 65/67. The 2880. And the 2860 handled every 2305 I
found on them.
Doug Fuerst
Principal Consultant
BK Associates
718.921.2620 (O)
917.572.7364 (C)
[email protected]
------ Original Message ------
From: "Seymour J Metz" <[email protected]>
To: [email protected]
Sent: 24-Jan-18 4:55:25 PM
Subject: Re: CKD details
There's certainly no requirement to use Set Sector on any disk drive,
but I question whether the 2860 could handle the data rate of a 2305.
BTW, a company called CIG had a block multiplexor channel that you
could attach to a 360/65.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
________________________________________
From: IBM Mainframe Discussion List <[email protected]> on
behalf of Tony Harminc <[email protected]>
Sent: Wednesday, January 24, 2018 1:28 PM
To: [email protected]
Subject: Re: CKD details
On 24 January 2018 at 10:57, Seymour J Metz <[email protected]> wrote:
I wrote:
What use is Set Sector without a block multiplexor channel (which
allows disconnect/reconnect)? Were those available for some S/360
models?
Of course they were available; the model number for the 230 should be
a clue that it was announced for the S/360. For that matter, the model
number of the 2880 is a dead giveaway. Check bitsavers for the 360/85
and 360/195.
I understand the model numbering. But there's no *requirement* to use
Set/Read Sector in your channel programing for a device that supports
RPS; it's just a performance issue. A 3330 (and a fortiori, a 2305)
should be able to be plugged into a 2860 selector channel and still
work.
Tony H.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
