Raid 1 & Offsite Storage of a 3rd rotated HDD?

[DCGSyd]

I have just installed a Patriot Corza PCZ35SNAS2 with two 1.5TB HDSs in Raid 1 configuration.
Is it possible/technically feasible/advisable to periodically swap in a third 1.5TB HDD so the third HDD can be held as off-site backup and swapped on a regular basis. I note that Patriot Corza documentation says not to remove HDDs until Corza is powered down - if this is the case why is the system termed hot swap?
I used to rotate 3 HDD's with one off-site a HP Proliant server (did not power the system down to swap) but the drives were SCSI drives?
Many thanks.

[Patriot_CJ]

technically? Yes.

you just have to keep the backup drive and rebuild the raid once every blue moon.

[Biomed]

I'm interested in doing the same as DCGSyd, and am wondering about the hot swap issue too. The manual clearly states to power down the Corza. Is that just a "CYA" from Patriot? Also, I can't find in the manual how to rebuild a RAID 1 array if one HDD fails. Are instructions available on how to do this whilst preserving data?
Cheers.

[Patriot_CJ]

techincally yes.. you can pull out the drive while it's running.

[Biomed]

Thanks.
And if a drive fails, plugging in a new HDD will automatically rebuild the array?