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networker save streams
We were facing issues with long running backups on networker server.
1 backup client - win 2k8-
1 save set - Drive P on RDM in VM
1 LTO6 tape drive
1 networker master+storage node on physical server - 1 GBPS NIC interface
normal files - neither in millions - nor large in size- simple file system backup
while we were testing , we noticed that 1 save stream was running at 1600 KBps and started troubleshooting on the issue
few times throughput reaches 1602 but not a bit beyond that
as networker server rebooted last night, we suddenly see 4 streams running at 1600kBps each.
now when we select the entire drive again throughput drops to 1600kBps, what shud be checked on networker?
the bigasm test also proved to be same from this backup client.
while backups were running on this test_grp one, I copied the backup client 4 savets into another group test_mj_grp and started a backup
now I see that 8 savestreams are sending data @1600KBps,
This points to the fact that the "connection" is bad.
Of course you can also verify that if you copy the files using another method.
If you achieve a similar result, it is obvious that there is something wrong with the network (configuration) - if the hardware itself is fine, it could well be that the traffic is routed in a strange way causing this limitation.
May I suggest you check the fundamental issues first before you rerun a test with NetWorker.
bingo.1
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Posted December 8th, 2015 06:00
Check whether the source data or the tape drive path is the troublemaker.
The easiest thing to do that is a "bigasm" backup or running a manual backup from the client for a huge file.
For details about "bigasm" please see "Performance Tuning Guide".