Re: [Networker] tape capacity

2005-04-25 13:49:52
Subject: Re: [Networker] tape capacity
From: Stan Horwitz <stan AT TEMPLE DOT EDU>
Date: Mon, 25 Apr 2005 13:44:16 -0400
On Mon, 25 Apr 2005, Jon Fraley wrote:

>My jukebox has LTO-2 tape drives in it.  I am trying to figure out why
>some tapes are marked full at 205-207GB and others get up to 400GB
>running the same groups to them.  These are all brand new tapes and

How well data compresses is a factor how compressable it is and how fast
the data can be streamed to each tape drive. For example, if you have
streaming video data go to one cartridge, you can expect it not to
compress well at the tape drive level because the data in its normal
format is already compressed. This all assumes you are actually using
hardware compression, not NetWorker's software compression.

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