jsprag wrote:
Good summation. The two aren't mutually exclusive, of course. If a
user wanted they could have RAID mirroring, another internal drive for
nightly (or any other interval) backups, and an external backup.
Starts to add up to a lot of drives though...
quite.
This is why I like
cdmackay;406809 Wrote:
Your rsync gives you something that RAID mirroring doesn't: a window to
detect user error.
RAID mirroring gives something that your rsync doesn't: the ability to
survive disk failure without any loss of availability.
Different goals.
Good summation. The two
Just to post a somewhat contrary opinion...
Drives do just fail. I had a 750GB Seagate drive fail out of the blue
two months ago, and had not been as good as I should have backing it
up, so ended up spending many, many hours recovering some email from
it, and ended up having to recreate a bunch
ncarver;406664 Wrote:
I also once had a machine whose motherboard went bad and it corrupted
all the mounted filesystems (including the one on the separate disk).
Interesting.
The drives were mounted by the OS, or simply on-line in the electrical
sense ?
(Generally I won't keep a backup volume
epoch1970;406713 Wrote:
Interesting.
The drives were mounted by the OS, or simply on-line in the electrical
sense ?
(Generally I won't keep a backup volume mounted once the copy is done;
too many times I erased the backup and the original...)
I said mounted filesystems, so they were
ncarver;406794 Wrote:
I think that mistakenly deleting files is one of the dangers of RAID
being used for at least temporary backups.
It bears repeating - RAID is not backup. Not even temporary backup.
Backup means having another set of data independent of the first. You
don't get this
jsprag wrote:
Mistaken deletions are the main reason I don't like RAID for my
situation. Loss of data is far more likely to come from fat fingering
than it is from hardware failure.
Right, and RAID mirroring isn't generally trying to minimise data loss,
it's trying to maximise uptime.
Your
The problem is exacerbated by the size of the music collection...630 Gb
at present. I used to have it spread over several 500 Gb drives - then
1Tb drives became cheap enough..so I have one internal and one in a usb
external as backup..but its a pain to copy new music to external on a
regular
I'm in agreement that RAID 1 or 5 is not the right answer. These
technologies are intended to provide high availability of data.
Relying on them for protection against data loss and as a substitute
for backups is a mistake.
I maintain two backups. The first is the weekly backup to an external
I like the idea of how you do that - 2 backup drives - each for its own
purpose..Ok..so this is going to require more thought
--
marinoni
marinoni's Profile: http://forums.slimdevices.com/member.php?userid=7
View this
I don't think I read the type of OS you're using. But under linux or
NTFS for windows you'd have no problem mounting drives to directories,
achieving the effect of a huge file hierarchy without taking the risk
of building a huge block device (as raid, LVM ... do.) Each drive can
break
Anyone have any thoughts regarding number of drives and which raid to
use?
I am currently using 1 x 1Tb drive...thinking of switching to either 2x
1Tb drive and raid 1 ..or 4 x 750 Gb drives and raid 5..
All drives are sata 2, computer is core 2 duo @ 3.1 Ghz/core, 4 gig
ram.
--
marinoni
2x 1T raid 1 is probably a better solution. Mirroring is much easier to
deal with. But for a home server, it might be better to just use an
external USB drive and do drive to drive backups.
--
SuperQ
SuperQ's Profile:
RAID is not a good backup solution. If you need more space you can span
your music storage partition access several drives. Backups should
always be done to another box or a USB disk that can be powered off and
disconnected to prevent damage from power hits.
95% of failures to PCs are caused by
agillis wrote:
RAID is not a good backup solution.
Sorry, I have to change this:
RAID is not backup. Period.
When you have valuable media or data on your disks, you have to have
backup. And RAID is not backup.
I've never seen any value to RAID for a SqueezeCenter server. I find it
easier to
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