hutchingsp
Technical User
I'm struggling to get what I think is the optimum throughput from my main file server.
The basic issue is that I have a file server which has a twin drive LTO3 library attached (so it's also a mediaagent) and the data volumes on the file server are on a 4gb/sec SAN so are reasonably quick.
A full backup is around 6.5tb and I average 320gb/hr which isn't terrible - but what I want to achieve is an even spread/flow of data to both tape drives when running a full backup which I think would saturate both tape drives.
My full backup storage policy is currently configured for 2 streams.
The primary copy (to the LTO library) has a multiplexing factor of 4.
The default backup client has 8 readers configured and "Allow multiple readers within a drive/mount point" is selected.
What seems to happen is that the backup doesn't "balance" across both drives, for arguments sakes 8 readers kick off and send 4 readers to each drive, and as the backup progresses 3 readers might finish all on the same drive so I'm left with 1 drive running at full speed with "excess" capacity (i.e. the readers are capable of pulling more data than the drive can accept) whilst the second drive has a single reader with capacity sat doing nothing.
I hope I've done a half-decent job of explaining that
Any suggestions appreciated.
Oh, this is Galaxy 7 with all SP's and everything is Windows.
The basic issue is that I have a file server which has a twin drive LTO3 library attached (so it's also a mediaagent) and the data volumes on the file server are on a 4gb/sec SAN so are reasonably quick.
A full backup is around 6.5tb and I average 320gb/hr which isn't terrible - but what I want to achieve is an even spread/flow of data to both tape drives when running a full backup which I think would saturate both tape drives.
My full backup storage policy is currently configured for 2 streams.
The primary copy (to the LTO library) has a multiplexing factor of 4.
The default backup client has 8 readers configured and "Allow multiple readers within a drive/mount point" is selected.
What seems to happen is that the backup doesn't "balance" across both drives, for arguments sakes 8 readers kick off and send 4 readers to each drive, and as the backup progresses 3 readers might finish all on the same drive so I'm left with 1 drive running at full speed with "excess" capacity (i.e. the readers are capable of pulling more data than the drive can accept) whilst the second drive has a single reader with capacity sat doing nothing.
I hope I've done a half-decent job of explaining that
Any suggestions appreciated.
Oh, this is Galaxy 7 with all SP's and everything is Windows.