04-17-2025, 04:10 AM
(02-12-2025, 11:00 PM)Enquiries Wrote: Hello Gentleman -
I recently lost my DS1515+ to the Synology Gods but thankfully was able to swap and move the drives into a new 1522+ which is running amazingly well. I am am getting down to my last few terabytes left on it and I'm curious your thoughts.. Should I expand the drives into an expander or should I replace the drives slowly to larger ones. I have read that when upgrading drives that you have to do 2 at a time? That's not an issue if that's the case but wondering if that is subway surfers true. I am kind of limited on space to be able to use an expansion case so that's why I'm leaning towards upgrading the drives. Not to mention the drives that I did swap into the 1522+ are running well but getting old. I appreciate your thoughts in advance and as always wish you both well!
Thanks,
Rob
You can absolutely do one drive at a time, not two.
The idea that you must do two at a time likely comes from misunderstanding certain RAID rebuild thresholds.
Synology's SHR (Synology Hybrid RAID) or traditional RAID 5/6 will rebuild the array after each new drive is inserted and synced.
Steps:
- Replace one drive with a larger one.
- Let the system rebuild (this can take hours to a day depending on drive size).
- Repeat for the next drive.
- Once all drives are upgraded, expand the volume in Storage Manager.