SCSI RAID Mirror to 2 locations

[Ozzyjim]

Gday,

I am looking at a Adaptec 39320D SCSI card and would like to know if it is possible to connect 2 identical SCSI RAID enclosures to the external connectors (1 on each) and have the data mirrored in each enclosure.

[Ozzyjim]

I dont know if this helps but kinda explains what I want - I would also want it to show up like a regular raid array (as a single harddrive)

[rallynavvie]

You should be able to since every drive that is connected would have a SCSI ID that you could specific which drives are in which array. It's been a while since I've done an array setup for that HBA though.

[Ozzyjim]

I guess that would have to be configured in Adaptec Storage Manager?. Both enclosures would be RAID 1 and have 2 drives in each and should all show up as a single drive on the pc (F.. The whole idea behinf this was so that there was a backup (hence RAID1) and did not have to remember to do it then a 2nd backup in the shed incase of fire or theft. Back to reading the manual for Adaptec Storage Manager for the 2nd time

[RabidDog]

It might work, if you are implying you are using two sets of disks in a mirrored array. However the likely problem is going to be length of cables. I suspect they will be limited to a few feet at best. Best off just doing a daily backup o/night to your shed storage,(as well as raid1) that way you lose 1 days work at most, of course you should also rotate your backups off-site with a GFS cycle.

[Ozzyjim]

I was just thinking about the cable length issue and didnt know if it was then possible to use a 2nd pc in the shed networked to the main pc with it's RAID1 enclosure connected to that and still work by network?... Of course I could just go the easy route and install a removable HDD caddy for the 2nd HDD in the RAID array and put that into a fire safe for o/night - but where would the fun / challenge be in that and would still lose the info if fire occured during work.