December 13, 2000 01:35 PM
(in response to DPetro@AOL.COM)
Allocation on cylinder boundaries is combined hardware/software
It has nothing to do with SHARK devices per se.
In the old days, any non-cylinder aligned allocations would cause
level interrupts, no matter what device it is on. If a program is
using seek commands, then this is still true, even for a SHARK
However, most all, if not all, programs have been modified to use
extent and locate record commands. By using them many of the old
considerations have dropped away.
I would still recommend using cylinder allocations for any data set
tracks. Housekeeping is easier.
This is just my opinion and does not reflect an official position
BMC Software, Inc.
Austin Research Labs
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From: [login to unmask email] [mailto:[login to unmask email]
Sent: Tuesday, December 12, 2000 7:51 PM
To: [login to unmask email]
Subject: Shark and Cylinder Allocations
With the new Shark devices and 'virtual' disks, is the idea of
cylinder boundaries still valid? Any thoughts would be