DLT vs 80 backup extreme slow

[James Li_1]

I've just installed an external DLT vs 80.
It is extremely slow. (20GB for full 38 hours).
For this rate it's almost useless for my network. It's slower than my DDS3.
Anyone know why?
I'm using ArchservIt client agent for across network backup of other servers.

[Jeff Technician 7]

Hi mate

Your DLT VS80 and DDS3 drive are very different in the way they transfer data. Bearing this in mind, you would have to have a SCSI card suited to the DLT VS80 drive... I would recommend Adaptec's 29160 LP Ultra 3 Wide.. This retails in the UK for around ??230 but Im not sure on prices elsewhere in the world.. maybe $300 in the US? Im not sure.

This should solve your issue

Thanks

Jeff

[Johnny wright_1]

Hi James
If u do have a compatable scsi card, i would adv u to downlod and run the performance assesment tool from hp website, this will test your sytem. Not the drive.

cheers
jp

[Jeff Technician 7]

The performance assessment tool is good as it simulates a backup on your system and tells you the expected throughput rate for your system.

However , it is only for use in Windows based systems.

Available from

http://www.hp.com/cposupport/information_storage/software/pat12.exe.html

Thanks Jeff

[James Li_1]

Jeff,
thanks.
I'm using Adaptec AHA-2940 (aic-78 PCI) Ultra w
SCSI adapter.
And results from Performance assessment tool are:

local drive - 5.7mb~7mb/sec
network drive - 1.97mb/sec
Std. rate - 6mb/sec

Does this means a imcompatible SCSI adapter?

james

[Jeff Technician 7]

Kinda. The DDS 3 would be absolutely perfect for that drive. However the DLT VS would be better suited with an Adaptec Ultra 3 wide card ( 29160 lp )

. Quite a common issue here with UK tech support.

Thanks

Jeff

[Jeff Technician 7]

Hmm...just looking at your results there...


For a local drive 5.7mb/sec is about right ( HP figure is 21.6/hour i.e 360mb / min, 6 mb a second.)

Network drives are generally a hell of slower than local ones...


Thanks

Jeff