Sorin Srbu wrote:
>> -----Original Message-----
>> From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf
>> Of Benjamin Franz
>> Sent: Thursday, January 14, 2010 2:12 PM
>> To: CentOS mailing list
>> Subject: Re: Backup server
>>
>> If you have any budget at all, invest in bigger drives. 7200 RPM 1 TB
>> RAID rated drives can be bought for $160 each. Desktop rated 5900 RPM
>> 1.5 TB drives (which you can probably get away with in a dedicated
>> backup server since you don't care a lot about speed and can tolerate
>> long pauses for sector repair) can be bought for $110 each. Check Newegg.
>
> I haven't got a budget really. Today I asked for a new group-printer today and
> the boss looked pained... 8-}
SATA disks fit into 'office supply' budgets.
> I opted for the proven 500GB-sized disks and got more of those instead. I've
> had a handful of 750GB-drives die on me recently.
Go to the vendor's web site, enter their serial numbers and get an RMA for a
free replacement. Every vendor has had bad batches.
> Somehow it feels the
> technology isn't quite there yet for the bigger drive-sizes. Anybody remember
> the IBM Deskstars in the early 00's...?
They replace them too, within the warranty period. This is the reason you are
making backups, remember. Things break.
> Also, my experience is the more smaller disks you have, the faster they get.
> Less to write to each I guess.
That's true when the heads seek independently. With raid5 you lock onto the
slowest of the set unless you have a very large number of drives.
>> Second, to maximize 'depth' of backups you should use a 'Tower of
>> Hanoi'-like backup system.
>
> Good advice, thanks!
Backuppc will take care of that for you.
--
Les Mikesell
lesmikesell@xxxxxxxxx
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