On Tue, 22 Dec 2009, Sebastiaan van Erk wrote:

> Question 1:
>
> The first thing I noticed is that trashClean runs every 5 minutes, making it
> unable to spindown my disks. I changed the configuration setting to once every
> 7 days, but I was wondering if this is likely to cause any problems...

I do similar things.  No problems.

> Question 2:
>
> The next thing I'm wondering: what is the best way to make sure backups occur
> as close together as possible, so that the spinup time is minimalized and I
> don't get too many spinup/spindown cycles? I can use blackout periods of
> course, but are there any other measures I can take?

Our backup server has 4 raided mybooks which spin down automatically and
take a lot of time to spin back up.  I have a max of 2 jobs scheduled at a
time, and schedule backuppc to wake up every 6 minutes (spindown time is
about 10 minutes).

$Conf{WakeupSchedule} = [
'8', '8.1', '8.2', '8.3', '8.4', '8.5', '8.6', '8.7', '8.8', '8.9', '9',
'9.1', '9.2', '9.3', '9.4', '9.5', '9.6', '9.7', '9.8', '9.9', '10',
'10.1', '10.2', '10.3', '10.4', '10.5', '10.6', '10.7', '10.8', '10.9',
'11'
];

(only for a limited time because jobs at the observatory have to be
finished before about 5pm)

-- 
TimC
Never trust a man who can count to 1,023 on his fingers. --unknown

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