Biggest drive on Duo still 2TB?

I believe for sparc models they can only support up to 2TB.

@ZBoater

You may want to check first if you have a Duov1 or Duov2: http://www.rnasguide.com/2012/01/09/how ... -or-nv-v2/

If ever you have a Duov1, only up to 2TB disk capacity is supported because it does not have GPT partitioning.

Yup, I got a v1. I guess I'll set it up Raid 0 and get 4TB since it's just a backup.

ZBoater wrote:
Yup, I got a v1. I guess I'll set it up Raid 0 and get 4TB since it's just a backup.

RAID-0 spanning both drives is fragile (entire volume lost if either drive fails). So I'd consider jbod instead.

Wouldn't jbod also lose my volume if one drive fails? I need all 4TB in one volume.

This being the backup of a Raid1 NAS, it's not that important it be reliable. I mean, I'm just wanting to find my old Duo a home not in the trash heap. :)

ZBoater wrote:
Wouldn't jbod also lose my volume if one drive fails? I need all 4TB in one volume. This being the backup of a Raid1 NAS, it's not that important it be reliable. I mean, I'm just wanting to find my old Duo a home not in the trash heap. :)

jbod would have two 2 TB volumes, and if one disk fails on only the data on that disk is lost.

If you absolutely need 4 TB in one volume, then obviously spanning RAID-0 is what you need. Though the volumes are not visible to the users (only the share names), so in most cases you can have 2 jbod volumes very easily. My duo, RN102, and RN202 are all used for backup, and all are jbod.

That's great advice. Thanks! I'll set it up as jbod and two 2TB volumes, and setup the backup jobs to back up to each individual volume/drive. I bought the Duo in 2011 and am not sure how much longer it has, but while it still works I figured it could backup my RN202 (or the important stuff anyway).

I started the transfer yesterday, and it looks like it will take a couple of DAYS to do 1.5TB using Rsync NAS to NAS. I might stop that and use my laptop to do the transfer instead to test out the faster speed of the RN202. That Duo was very reliable but boy is it sloooooowwww.... :)

rsync is computationally challenging for the duo.

The fastest way to migrate your data to the duo is to use NFS with frontview backup. Then edit the backup job, and change the protocol to rsync. Then run it again (the second pass should be extremely fast).

That gives you the fastest speed for the initial transfer, combined with the greater efficiency of rsync for incremental backups.