On Thu, 2006-12-21 at 08:38 -0600, Carl Wilhelm Soderstrom wrote:

> > I agree that 3ware controllers are good hardware and worth the money,
> > but I suspect you are comparing the time of swapping an internal
> > drive vs. a swappable cage here.  It's not that hard to type
> > an fdisk command followed by an mdadm --add command.   
> 
> no, I'm actually not. it sounds like one of those things that's simple; but
> somehow always ends up taking a lot longer than you expect. At least, that's
> my real-world experience with the process. 

It really is as simple as an fdisk and mdadm command for the case
where it isn't a boot drive and the other mirror member is still
good.  If you have hot-swap scsi's you can do without shutting
down with an extra command or two to re-probe the scsi bus, but
for backuppc we are probably talking big IDE drives and a shutdown
anyway.

> it's noteworthy that I'm in a consulting environment, rather than being a
> full-time admin for one company. so going off to do something else
> productive while the drives are sync'ing, or a long command is running, is
> not always an option. 

For a permanent replacement, there is no need to wait for anything.
You can use the machine normally while the sync happens and it
takes care of itself when finished.  You probably don't want something
as intense as backuppc running actively but if it is during the
blackout period it shouldn't hurt to let it start up.  I sync my
external drive with everything active, then stop backuppc and unmount
the raid momentarily while I fail and remove the external member but
that is just so the filesystem will be clean on the drive when removed.

-- 
  Les Mikesell
   [EMAIL PROTECTED]



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