Hi Does anyone use TDP for Domino backing up ZFS files ? I am testing performance for ZFS as against HFS and find ZFS some 8-12% slower when running a domdsmc sel command. Our environment :
Zos 1.1 Zos TSM Server 4.2.3.0 TDP/Domino 1.1.2.0 TSM OEMVS Client 4.2.1.0 We took a sample 5000 cylinder HFS file about 54% utilised and copied the data to test HFS and ZFS files. Here are some sample results from TDP/Domino backups : Commands in both cases were : domdsmc sel "mailst/*" /subd=yes >> /etc/tsm/domino/m01/backups/�MAILDIR.log HFS : Total Domino databases inspected: 53 Total Domino databases backed up: 53 Total Domino databases excluded: 0 Throughput rate: 7,385.72 Kb/Sec Total bytes transferred: 1,990,998,528 Elapsed processing time: 263.26 Secs ZFS : Total Domino databases inspected: 53 Total Domino databases backed up: 53 Total Domino databases excluded: 0 Throughput rate: 6,488.06 Kb/Sec Total bytes transferred: 1,990,998,528 Elapsed processing time: 299.68 Secs ZFS are allocated as per recommendations in Red Book ZFS Implementation SG246580 As far as Domino functions go, ZFS is far superior in performance to HFS; from the TSM side we see the opposite. Does anyone else have this experience ? Thanks Robin Lowe Senior Storage Analyst Storage Management Team For more information on Standard Life, visit our website http://www.standardlife.com/ The Standard Life Assurance Company, Standard Life House, 30 Lothian Road, Edinburgh EH1 2DH, is registered in Scotland (No. SZ4) and regulated by the Financial Services Authority. Tel: 0131 225 2552 - calls may be recorded or monitored. This confidential e-mail is for the addressee only. If received in error, do not retain/copy/disclose it without our consent and please return it to us. We virus scan and monitor all e-mails but are not responsible for any damage caused by a virus or alteration by a third party after it is sent.
