3390 model 1, 3 and 9 were real devices that were the same except for the number of cylinders. After
RAID came along everyone stopped making real devices. Model 27 and 54 never existed. They were
emulated model 9's with more cylinders.
[EMAIL PROTECTED] wrote:
Yes there are model 27 and 54 as well as 1, 3 and 9.
-----Original Message-----
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Marcy Cortes
Sent: Tuesday, March 06, 2007 12:03 PM
To: [email protected]
Subject: DASD cylinders
How many cylinders in a mod 9?
Is there such thing as a mod 27 (32,760 cyl) and mod 54 (65520)? Or are
these just mod 9s of a different size? My storage folks don't believe me
(I'm reading $DASD$ CONSTS S) that they are all just variable sized mod
9.
Marcy Cortes
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