Dennis,

If your CE is from HDS, SUN or HP then when we initially format the array
groups we have some common sizes to select from, but a custom size can also
be specified with 1 CYL granularity.

The designation for the last two iterations of large volume support in z/OS
are 3390-L and 3390-M, which are based on the two thresholds that z/OS
supported.

The 3390-L equates to the so called 3390-27 and the GUI suggests 32760 CYLS.
The 3390-M equates to the 3390-54 and 65520 CYLS is suggested, and the GUI
will not allow the CE to exceed this amount.

Note that these are suggested sizes only. The engineer has to enter the
actual size that the customer requires the RAID Group formatted as. And of
course you can have a plethora of different sizes, as long as you don't
exceed 2048 volumes (I have run HUR function tests with 1000s of 10 CYL
volumes).

Ron

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
> Behalf Of Dennis Trojak
> Sent: Saturday, August 23, 2008 12:47 PM
> To: [email protected]
> Subject: Re: [IBM-MAIN] 3390-27
> 
> John,
>  I was asking because the CE wanted to know what I wanted. I assumed
> the 30051 since that was triple the size of a -9 but he informed me
> that was a "custom" size since his configurator showed 32760 as the
> size of a "large" volume. OEM vendor not IBM.
> Dennis
> 

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