Toomas Aas wrote:
Hi!
On Tue, 24 Feb 2004 9:32 am, Richard Beyer wrote:
We're currently doing a back up of a FreeBSD 4.9 (2) server by
plugging a USB external drive in and then doing
cp /dev/ad0 /dev/da0
This takes about 30 hours, (USB 1).
To which anubis answered:
Why not use removeable drive trays with straight pata drives?
Few months ago I did some research on this and found that not every
removable IDE drive bay supports hot-swapping - the ones that do are
somewhat more expensive. I myself ended up using external FireWire
drives, which have worked out quite well (and the speed is much better
than USB with FreeBSD 4.9):
Toomas Aas wrote:
To which anubis answered:
Why not use removeable drive trays with straight pata drives?
Few months ago I did some research on this and found that not every
removable IDE drive bay supports hot-swapping - the ones that do are
somewhat more expensive. I myself ended up using external FireWire
drives, which have worked out quite well (and the speed is much better
than USB with FreeBSD 4.9):
I am using removeable drives and trays. I am using the plain jane
vipower ones as seen here.
http://www.vipower.com/product/MobileRack/3fan_mobile_rack/vp_70/vp_7010ls3fu.htm
They are connected to a promise 2 channel ide card as seen here
http://www.promise.com/product/product_detail_eng.asp?productId=11&familyId=3
The drives are 200GB seagates.
Neither of these is rated as hot swappable as far as I know. We are
using them as "hot swappable".
To us this means that we unmount the drive, atacontrol detatch, power
off then yank out without
powering down the server.
We have been using this as a backup method successfully for over a
month now in production and
before that for a couple of months in testing. We havent noticed any
problems so far.
I hesitate in calling it a success at this stage. Ask me in 2 months
time when I see how the drives handle
being lugged off site daily.
When I looked at it I took the hot swapping features to be needed only
for windows.
If you are worried about burning out something use an ide card like we
are so if smoke comes out
you can bin it and not the motherboard.
The cost wasnt that great. In Aussie dollars the trays were $30, the
card about $60.
The machine is currently running 5.1.
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