06-29-2007 02:32 PM
One of the things I did to resolve was to update the symantec tape driver and ever since the throughput is 33Mb/s whereas before it was over 300. I can not find later drivers, if any one could assist with some advice or links that wouldbe great because so far I have come up with nothing. Currently I back up over 200Gb so 33Mb/s is not good enough.
06-29-2007 05:03 PM
06-29-2007 11:07 PM
07-02-2007 12:00 AM
07-05-2007 12:07 AM
07-06-2007 09:38 AM
write single block mode enabled
This is probably the culprit. With this enabled, all buffering is ignored/disabled. So backup exec reads a block from disk, writes it to tape, reads a block, writes it , etc
Block and buffer should be OK. I'd probably go with a buffer of 128K, but it probably won't make much difference.
Also, shouldn'd have much effect on tghroughput, but pass thru should be disabled for locally connected devices