Len Rugen wrote:
When we moved from a MP3000 with internal disk to a Shark (old, used, F20? I think,
fairly small drives anyway) I needed a lot of 3390-3 volumes. Our shark is half full, I
think that's 4 drawers, I configured one with 62 3390-3's and 4 1000 cyl "mini"
volumes for things like MIM and JES CKPT. I configured the other 3 drawers as 3390-9's
or slightly larger, whatever worked out. BUT, with base and alt. addresses, I used all
the addresses, at least in the range for the 3390-3's. (that was overkill, but it's fast)
As time passes, I've eliminated a lot of the 3390-3 requirements. What is
required to reconfigure some or all of these to 3390-9's? Do I have to do the
entire drawer or can I do parts / areas at a time? It looks like each drawer
has 2 LCU's in the IODF, for a total of 8. And it's still ESCON, if that
matters and connected to a z800 at z/OS 1.4
We did something similar last year. On our 2105-800 we reconfigured 31K
cylinder drives into half as many 62K cylinder drives. This had to be
done on an LCU boundary. All of the data was lost. It had to be backed
up or moved to other drives on another LCU first.
--
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| Edward E. Jaffe | |
| Mgr, Research & Development | [EMAIL PROTECTED] |
| Phoenix Software International | Tel: (310) 338-0400 x318 |
| 5200 W Century Blvd, Suite 800 | Fax: (310) 338-0801 |
| Los Angeles, CA 90045 | http://www.phoenixsoftware.com |
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