Time for restore with a DLT4500

[FOREST Michel]

Hi,
I would like to known what is the transfer rate of restore and backup with a DLT4500 on UX server.

Thanks for all

[steven Burgess_2]

Hi

What method of backup and restore will you be using?

Steve

[Paula J Frazer-Campbell]

HI

This is an "It Depends" answer,

1. It depends upon how busy the server is whilst the backup is occuring.
2. The size and number of the files.
3. The distribution of the files on the server.
4. The quality of the backup tape and cleanliness of the tape heads. ( Dirty heads will incur retries).

If you look at the Tech Spec for the drive it will give best rate (Very Rarly achieved), a good ball park figure is 60% of best rate on a system that is not busy.

Are you seeing excessive backup times.

Paula

[FOREST Michel]

I'm using Omniback to restore file-system.
It's both, short and long file.

[Paula J Frazer-Campbell]

Hi
How much data and how long does it tape?

Paula

[Paula J Frazer-Campbell · Accepted solution]

Hi
Tech Spec:-

http://sagelec.com/compspecs/td/4500_atlp.html

Paula

[Paula J Frazer-Campbell]

Hi

Looking at the tape spec I would estimate a figure of approx 7 Gig / hour should be normal.

It will as I have said depend upon server and data.

HTH

Paula

[Vincent Farrugia]

Hello,

Theoretical speed is 1.5Mb/s native speed. This depends on compression though. 2:1 compression yields to 3 Mb/s for example.

HTH,
Vince