Some performance improvements in that process are included. 

Also, a (extra cost?) 'hyper PAV' that uses a 'ucb' from a pool only for
the duration of the I/O. Talk about instant gratification :-)  



-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Schwarz, Barry A
Sent: Thursday, August 14, 2008 1:47 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: Here we go again (was z/OS Hot Topics 19)

I think the original point was more about logical volume failures (VVDS
deleted, VTOC or VTOCIX hosed).  The larger the volume, the greater the
impact of a failure.

After time, I wonder what fragmentation would look like.

-----Original Message-----
From: Ron Hawkins [mailto:snip] 
Sent: Thursday, August 14, 2008 10:09 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: Here we go again (was z/OS Hot Topics 19)

John,

Not really. A disk failure - two disk failures actually - on an Array
Group of 3390-3 can affect over 300 volumes. I would much rather manage
restoring 4-10 large volumes than 300+ small ones.

 

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