Upgrading the two HDD's in my NAS

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Munchkin1 wrote:

I have a Netgear Duo RND 2110 (S/N 24M3047 PO23OF) that is now quite old. It does have a V2 sticker on the bottom but it may be so old that it is in fact a V1.

 

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It sounds to me like it is a v1.  

 

A Duo v1

• runs 4.1.x firmware
• says Duo on the front  of the chassis
• might have a v2 sticker on the bottom

A Duo v2

• runs 5.x.x firmware
• says Duo v2 on the front of the chassis

 

Note that Netgear's hardware compatibility list for both the Duo and the Duo v2 are outdated - so just ignore them.

 

A Duo v1 is limited to 2 TB disks.  Western Digital Reds (WD20EFRX) or Seagate Ironwolfs (ST2000VN00x) are both good choices.

 

At least one poster got 8 TB drives to work in his Duo v2.  He did run into some issues (which could have been unique to his system).  4 TB will certainly work well.  I also recommend NAS-purposed drives (WD40EFRX or ST4000VN00x) for this platform.

 

During volume expansion, the normal RAID protection from disk failure isn't available - so your data is more at risk.  You should have a backup plan in place anyway (RAID isn't enough to keep your data safe).   But it's particularly important to have a current backup when replacing disks.

 

The process is pretty simple.  You hot-swap disk 1 with (removing the old, insert the new) with the NAS running.  Wait until the NAS says the RAID resync is complete, and hot-swap disk 2.  Again, wait for RAID resync to complete.  

 

At that point, the volume likely won't have expanded.  Reboot, and you'll see another resync (which is for the newly added space), and the volume will expand.

 

If you do run into a problem, you can do a factory default with both disks in place.  That will destroy your data - so you'll need to reconfigure the NAS and restore your data from the backup.  You'd also need to re-install any add-ons you might be using.