Hello *SM'ers,
Has anyone observed the following;
We are experienceing performance problems with LanFree backups. The
issue goes away with a retsart of the storage agent, but at some point
in the future comes back, requiring another restart of the stoarge agent
etc..
Now, when the backups are going OK, the following steps are observed,
take note of what happens to the ByteCount (IE: the small cumulative
indicator in the square brackets at the command line, '[12.3 G]') ;
Backup started
First directory entry sent
Backup pauses, while byte count increments
Backup generates 'unsuccesful' line, and then 'waiting for mount of
offline media'
ByteCount PAUSES
When tape is mounted and wound, BYTECOUNT increases Very Fast. (+100 -
200MB / 'tick' )
Then end stats show simlar to;
Total number of objects inspected: 3
Total number of objects backed up: 3
Total number of objects updated: 0
Total number of objects rebound: 0
Total number of objects deleted: 0
Total number of objects expired: 0
Total number of objects failed: 0
Total number of bytes transferred: 4.70 GB
LanFree data bytes: 4.70 GB
Data transfer time: 153.13 sec
Network data transfer rate: 32,229.74 KB/sec
Aggregate data transfer rate: 28,567.48 KB/sec
Objects compressed by: 0%
Elapsed processing time: 00:02:52
..NOTE, ALL data has gone LanFree
Now, when the backups are performing slowly, the following occurrs;
Backup started
First directory entry sent
Backup pauses, while byte count increments
Backup generates 'unsuccesful' line, and then 'waiting for mount of
offline media'
ByteCount CONTINUES TO INCREMENT SLOWLY (+15-20 MB / 'tick')
When tape is mounted and wound, BYTECOUNT INCREMENTS SLOWLY (+15 - 20MB
/ 'tick')
At the end of backup, we see this;
Total number of objects inspected: 6
Total number of objects backed up: 2
Total number of objects updated: 0
Total number of objects rebound: 0
Total number of objects deleted: 0
Total number of objects expired: 0
Total number of objects failed: 0
Total number of bytes transferred: 4.18 GB
LanFree data bytes: 2.37 GB
Data transfer time: 42.01 sec
Network data transfer rate: 104,402.77 KB/sec
Aggregate data transfer rate: 15,331.31 KB/sec
Objects compressed by: 0%
Elapsed processing time: 00:04:46
Does this indicate, that in this instance some data went LanFree while
some went LAN?? .. and what significance is the fact that the BYTECOUNT
increases slowly while waiting for a mediamount, but it doesn't when the
backup performs well?
Puzzled;
Matthew.
Computer says 'No'..
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