Michael,
Raid 1, only primary copies. Save the space for conversion to TSM 6 which
does not support TSM level database mirroring,
Steve
Steven Harris,
TSM Admin, Sydney Australia
Michael Green
<mishagr...@gmail
.COM> To
Sent by: "ADSM: [email protected]
Dist Stor cc
Manager"
<[email protected] Subject
.EDU> [ADSM-L] 4 spindles for db: best
performing setup
19/02/2009 07:22
AM
Please respond to
"ADSM: Dist Stor
Manager"
<[email protected]
.EDU>
You are given 4 spindles to place TSM DB on them.
How would you set them up to squeeze maximum performance for DB?
1. Dedicate each spindle for a DBC (result: 3 DBCs, one spindle left
out, nevermind)
2. Create RAID 0 out of each pair of disks. Place a DBC on each RAID
(result: 2 DBCs on two separate RAID 0)
3. Create RAID 1 out of each pair of disks. Place a DBC on each RAID
(result: 2 DBCs on two separate RAID 1)
4. Create RAID 5 out of all spindles. Place one DBC on the RAID
(result: 1 DBC on RAID5)
Notes:
a. There is no RAID 0+1
c. Wasted space is not a concern
--
Warm regards,
Michael Green
