Backup speeds have slowed down...

[myuserid7]

Hi,
I just noticed that our weekly full backup is taking 12 hours to backup 334GB of data. Details are:
------------------------
Data Size: 334GB
Transfer Time: 12:13:17
Throughput: 26.75 GB/hr
No. of Objects: 1,246,618
------------------------

Last month the same file share backup was quicker ie:
------------------------
Data Size: 322GB
Transfer Time: 7:25:53
Throughput: 43.50 GB/hr
No. of Objects: 1,224,942
------------------------

But here's the intersting bit. If I do an OnDemand backup of a folder with 956 files, the throughput is higher ie:
------------------------
Data Size: 1.5GB
Transfer Time: 0:01:40
Throughput: 50.43 GB/hr
No. of Objects: 956
------------------------

If I backup just one file its amazing:
------------------------
Data Size: 1.82GB
Transfer Time: 0:00:43
Throughput: 154.46 GB/hr
No. of Objects: 1
------------------------

Are the figures of 12Hrs acceptable for 334GB of data backup ? Are there any averages that I can compare to ?

Our setup is a fibre SAN, where the data is sitting on arrays. Hosted via a Win2k3 Cluster.
CV uses private gigabit ethernet switch to communicate with the client serves.

Appreciate any info.
Thanks

 

[birky]

You will always see fluctuations in throughput speed as there are many influencing factors.

How many streams you got set? ...try increasing them.

Or split the job into smaller sub-clients.

more files = slower throughput....and you have a lot of files ;-)

 

[myuserid7]

Thanks Birky,

The Storage Policy has 5 streams.

I might try and split the job into smaller sub-clients.

cheers

 

[dall]

Have you put on SP3PostPack 1 - it sped up our backups

 

[myuserid7]

Thanks Dall,
I haven't applied the Post pack yet. Will give it a go and see what happens.

cheers