Bacula-users

Re: [Bacula-users] Bacula configration for FC LTO-5 tape drive

2011-01-12 07:37:03
Subject: Re: [Bacula-users] Bacula configration for FC LTO-5 tape drive
From: Alan Brown <ajb2 AT mssl.ucl.ac DOT uk>
To: Phil Stracchino <alaric AT metrocast DOT net>
Date: Wed, 12 Jan 2011 12:33:54 +0000
Phil Stracchino wrote:
> The way LTO compression works, the tape drive compresses each block on
> the fly, then writes to tape whichever is the *smaller* of the raw or
> the compressed block, flagging it accordingly.

It's also worth noting that LTO has a trailing read head and every block 
written to the tape is verified on the fly - rewritten if required.

This is one of the reasons the things are so reliable.




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