Bacula-users

Re: [Bacula-users] Backup on Tape

2014-08-05 13:44:56
Subject: Re: [Bacula-users] Backup on Tape
From: Dimitri Maziuk <dmaziuk AT bmrb.wisc DOT edu>
To: bacula-users AT lists.sourceforge DOT net
Date: Tue, 05 Aug 2014 12:42:36 -0500
On 08/05/2014 10:32 AM, Alan Brown wrote:

> If you're backing up to LTO of any type, the only way to get reasonable 
> performance is to backup to a high performance SSD spool (or SSD stripe) 
> and then despool from that to the tape.
> 
> A decently fast SSD spool area can handle simultaneous spool/depool 
> operations - but do NOT try this with low end consumer SSDs, the write 
> latencies will kill performance (most consumer SSD random write 
> performance is "so-so" at best.).

I'd also consider write wear-out and your retention periods 'cause when
you fry your system drive/bacula database ssd, you may have to bscan N
years worth of tapes to make your backups accessible again.

-- 
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu

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