Hi all,
I find that netbackup is slow when backing up to disk, yet, backup to tape (and restore from tape) is fast. However, when i log onto the media server directly , and attempt to copy files directly to the diskpool (just to test throughput between client and server) it's 110MB/sec. During backup job, it runs at 3 - 8MB / sec.
Disk STU has been set to Max Concurrent Jobs = 5, and right now, there's just this one cilent backing up to disk where it's slow. I've tested with another client and same result.
I did some reasearch and this seems to be a popular topic. I than created and modifying the below files: (no TXT extension)
NUMBER_DATA_BUFFERS_DISK = 32
SIZE_DATA_BUFFERS_DISK = 262144
The Array I'm copying too is a Raid 5 Array on a DS4700 with a 4 GB Fibre Channel Link. As stated above, copying files (via windows) to this STU is very fast, even while the backup is running .
Have any of you experienced this?