All, We are implementing an IBM N-Series Filer cluster (rebranded NetApp) and working on getting the full-volume DR backups setup. We are using SnapMirror2Tape with 3-way NDMP (don't want to dedicate FC tape drives from our Library Mgr environment, and we have 10gb Ethernet from the Filer to the TSM Server). TSM Server 6.2.2 AIX on P-series. Tape is IBM 3592, disk is IBM DS8k.
When we started testing, we were only getting about 60-80MB/s throughput. After turning off, we are now up to 90MB/s. Filer cpu is < 40%. We have run the following tests: NDMP Dump to null = 300-400MB/s (disk is not the bottleneck) NDMP Dump to the other Filer in the cluster = 104MB/s (takes TSM & tape out of the equation) NDMP Dump to another vol on the same Filer = 110MB/s (takes network out of the equation) We're not getting much help from IBM Support, and at least one person has said that 100MB/s is about the best you can expect. So I'm curious if anyone is getting more than that, and if not, what is holding it back? I have at least one Windows 2008R2 SQL Server running under VMWare that has proven it can restore between 225-325MB/s on the same 10gb network, so I don't understand why we can't achieve better performance on a backup that is supposedly block level? Thanks, Steve Schaub Systems Engineer II, Windows Backup/Recovery BlueCross BlueShield of Tennessee ----------------------------------------------------- Please see the following link for the BlueCross BlueShield of Tennessee E-mail disclaimer: http://www.bcbst.com/email_disclaimer.shtm