Dear All,
Offical 3590 tapes capacity is 10GB (& upto 30GB with compression).
I use 3590 H/W compression & ADSM AIX v2 server (v2 client with no
compression & v3 client with compression) , from adsm "q vol", there
reports different estimated capacity for different type of backup data
(attached below). If estimation from ADSM is accurate, it seems that with
s/w compression, tape capacity is 9-10GB of the compressed data. If no s/w
compression, it can vary from 10GB to 63GB (even 100GB I haven't attached
here) depending on data type.
I am planning for implementing Oracle database backup, instance size range
from 100GB to 1.2TB. Those in Oralce7 will use SQL-Backtrack and those in
Oracle8 will use RMAN+ADSM ConnectAgent. Because of network capacity, will
use SQL-BT compression & ADSM compression for each case.
Just want to share your expreience on 3590 tape capacity so that I can plan
for the amount of tapes to be purchased with consideration of sets of full
backup image, retention period, amount of archived redo log ... etc.
Attachment:
Estimated capacity from "q volume " & the corresponding backup data (all
the volumes here are with "Volume status FULL" from q vol)
Estimated
Capacity compression Platform backup data
9.052.6MB adsm client Digital Unix Oracle database in filesystem
9.082.1MB adsm client Digital Unix Oracle database in filesystem
9,346.7MB adsm client HP filesystem
9,387.7MB adsm client HP filesystem
62,695.9MB no HP Oracle database in filesystem
63,873.0MB no HP Oracle database in filesystem
10,509.0MB no HP filesystem
12,109.4MB no HP filesystem
32,123.5MB no HP filesystem
9,812.2MB sqlbt HP Oracle database by SQL-BT
Regards,
Eric Tang / Hong Kong / IBM @ IBMHK
Technical Services, Strategic Outsourcing,
IBM Greater China Group
Tel: (852)-2105-2119, Fax: (852)-2861-2493
Notes: Eric KF Tang/Hong Kong/IBM@IBMHK
Internet : tangeric@ hk1.ibm.com
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