Everyone,
Thanks for all the advice.
Ron
On 1/13/2011 2:23 PM, Mauro Souza wrote:
On the new projects I work with, we try to allocate mod-3s and mod-9s to zVM
and to Linux filesystem (var, home, usr, etc and so...), and use FCP disks
to everything else, like Oracle databases, webserver logs, NFS area, and
everything it's supposed to grow a lot in the future.
Troubleshooting zVM and Linux installed on 3390 is way easier for me (and
for almost every zVM guy) than on FCP. And creating 600GB of storage area in
3390-3 disks is not a pleasant task... So we mix them.
Mauro
http://mauro.limeiratem.com - registered Linux User: 294521
Scripture is both history, and a love letter from God.
On Thu, Jan 13, 2011 at 5:41 PM, Ron Foster at Baldor-IS<rfos...@baldor.com
wrote:
Hello list,
This may have been discussed before...
Way back in deep dark ancient history, we used the Redbook to get
started with Linux under z/VM. As a result, we carved up our storage
subsystem in to a bunch of mod3 drives. We put a few mod 9 drives in
the mix.
We added drives to a guest in standard chunks. That is when storage was
needed by a Linux system, we added a mod9 or mod3 to it.
When that Shark went off lease and we moved to a DS8000, we pretty well
kept the same philosophy. Only we added a bunch more mod3 and mod 9
drives.
We are a SAP shop and any large databases reside in DB2 on z/OS. There
are a few large file systems on 3 or 4 of our Linux systems, but for the
most part the drives attached to a Linux system go something like this.
A boot drive. One to several mod3 drives for swapping (the appropriate
ones have vdisks). One to several mod3 or mod9 drives for the SAP code
and local files.
We are moving our production drives. We finally have gotten our
production Linux systems where about half or do very little swapping.
We do not have dirmaint, so we keep up with disk allocations with
dirmaint and a spreadsheet.
Now time has come to migrate to another storage system. I was wondering
what other folks do.
1. Do they have a whole bunch of mod9 and mod3 drives that they allocate
to their guests?
2. Do they take mod27 drives (someone at SHARE warned me about taking
mod54 drives) and use mdisk to carve them up into something smaller.
Any input would be appreciated.
Thanks,
Ron Foster
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