Re: D2D on AIX
2004-09-21 23:56:46
Tim, we recently ran a bunch of tests on client side compression. In every
test the backup ran for 2 to 3 times longer. In some cases this wouldn't be a
big deal when you look at the backup alone being incremental and all. However,
we also believed that it would also cause the restore to run 2 to 3 times as
long to uncompress the data. As a result of these tests and thoughts we
decided not to implement client side compression.
Have you run any tests to see how compression effects your backups and restores?
"Rushforth, Tim" <TRushforth AT WINNIPEG DOT CA> wrote:
We use 5 days for reuse delay. I did a quick comparison using 25GB and 4GB
volumes on our pilot with the following results:
Disk Volumes - 25 GB Volumes
Stored Data - 236 GB
# of Disk Vols - 14 (including 2 pending volumes)
Total allocation - 14 * 25GB = 350 GB
67% Utilization
Disk Volumes - 4 GB Volumes (TSM2)
Stored Data - 333 GB
# of Disk Vols - 100 (including 12 pending volumes)
Total allocation - 100 * 4GB = 400 GB
83% Utilization
Reclamation was set at 25% for both of these.
It would be interesting to see others peoples results.
Thanks,
Tim Rushforth
City of Winnipeg
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- Re: D2D on AIX, (continued)
- Re: D2D on AIX, Eliza Lau
- Re: D2D on AIX, Rushforth, Tim
- Re: D2D on AIX, Rushforth, Tim
- Re: D2D on AIX, Rushforth, Tim
- Re: D2D on AIX, Johnson, Milton
- Re: D2D on AIX, Johnson, Milton
- Re: D2D on AIX, Rushforth, Tim
- Re: D2D on AIX,
TSM_User <=
- Re: D2D on AIX, Eliza Lau
- Re: D2D on AIX, Steve Harris
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