[ale] raid suggestions

[Lightner, Jeff]

If it is a SAN environment then maybe you can sell the idea of fibre tape drives to allow backups of multiple systems?   An LTO5 drive is extremely fast.

I've used NetBackup pretty much everywhere for several years but I hear a lot of good things about FOSS stuff like Bacula.





-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of mike at trausch.us
Sent: Friday, February 10, 2012 11:39 AM
To: ale at ale.org
Subject: Re: [ale] raid suggestions

On 02/10/2012 11:36 AM, Lightner, Jeff wrote:
> If it takes 36 hours to restore how are you backing it up in the
> first place?

Incrementally, and daily.

> RAID != substitute for backups.

I am fully aware of that.  If I weren't backing it up, it wouldn't be
restorable, now would it?  :-)

> RAID is intended to help preserve uptime because restore is always a
> PITA due to downtime but it can not be relied upon to prevent all
> failures.   What happens if the cabinet the disks are in catches
> fire?

Then they lose 1.5 days.  Here's hoping that such an event occurs on a
Friday night.

> We certainly do a lot of RAID storage both internal to servers with
> controllers and external via disk arrays on fibre SANs but we ALSO do
> backups AND send data offsite in case our data center gets
> destroyed.

Indeed.  I am not aware of any other (sane) way to do it.  It would be
much more expedient, however, if I had a tape drive in the system and
didn't have to do things like bring backups in on USB or optical disks.

        --- Mike

--
A man who reasons deliberately, manages it better after studying Logic
than he could before, if he is sincere about it and has common sense.
                                   --- Carveth Read, "Logic"





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