Hi Mark
I agree with Daniel ...
I'm working in a hospital .... so my 300GB storage pool is a RAID 5 ...
I cannot lose any data if a disk crash before the migration to tape ...

Luc Beaudoin
TSM/SAN/ Network Administrator
Hopital General Juif S.M.B.D.
Tel: (514) 340-8222 ext:8254 






Mark,

I'd say that depends on the level of security the organisation requires. 
If the disks would crash before migration, it would mean you've just lost 
all the backup data since yesterday night. Would you like to go to your 
boss and inform him about that and explain to him that you saved 300$ 
worth of disk?

Also, if you dont migrate every morning, the loss of data could be alot 
bigger than just one nights backup.

Best Regards

Daniel Sparrman
-----------------------------------
Daniel Sparrman
Exist i Stockholm AB
Propellervägen 6B
183 62 TÄBY
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51



"Stapleton, Mark" <mark.stapleton AT BERBEE DOT COM> 
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2004-07-21 15:15
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"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>


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Subject
Re: storage pool raid 1?






From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On 
Behalf Of Mike Eggleston
>I'm about to create a new storage pool with lots of disk and
>six drives. Does anyone have an opinion about either creating
>one huge filesystem for the storage pool or creating the
>filesystem as RAID 1?

Why waste the disk space to create the mirror for a disk pool that's
going to be migrated to tape anyway? 

--
Mark Stapleton