Thanks for your reply. Sorry, yes, I meant JBOD.
Can it be
mounted and read as single JOBD or must it be mounted as
a single unit of a mirror set in order to be read?
That should work if you mount
it read-only. I would
avoid trying to write to it, or you could corrupt the RAID metadata.
Yeah, I figure that although its RAID 1, there will still be RAID related meta-data on the
disk. I wondered if this meta-data made the disk unreadable. E.g. If you had one volume of
a RAID5 set then you cant recover your data from it, but a volume of RAID 1 should be OK
to recover data.
I also wondered if device names would cause conflicts. But, as you say, mounting it read
only it should then be OK.
For scenarios 3 and 4, I was thinking along the lines that your desktop computer at work
has RAID1 based USB drives for all your ~/home/ data. You just pull out the USB stick when
you go home at the end of the day, and plug it in again in the morning. If the office
burns down at night and you loose your computer, then your data is all on the USB stick
and available to be read by another computer. This RAID1 approach may not be the best way
to get yourself a backup, but would be one of the quickest / easiest to manage.
Maybe at a wlug meeting we could get Linux RAID1 up and running on a laptop with some USB
sticks and subject it to some testing and see if it handles the abuse and how auto-magic
it is, etc.