NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Using ReadyNAS for rack mount storage for backup, comparing to Synology
Hey folks, thanks in advance for any offered guidance. I'm a one-man content production house, needing to upgrade my local backup. I use the software Retrospect to back up to local drives, and si...
PhotoJoseph wrote:
On X-RAID, if I have 4 10TB disks I get 30TB [(10x4)-10=30], and then if I add another 10TB (5 drives total) it becomes 40TB usable space, right.
Correct.
PhotoJoseph wrote:
Now, if I add a sixth 10TB, it becomes a RAID 6 and I'd don't gain capacity until I add a seventh 10TB, correct? Am I getting that right?
I believe that is correct for a rackmount NAS (unless it was changed). Desktop NAS switch to RAID-6 when you insert the 7th drive.
PhotoJoseph wrote:
Finally, what if I add larger disks? If I start adding bigger and bigger disks, i.e. a 16TB instead of a 10TB, does the extra capacity become wasted?
If you are using single redundancy (e.g., RAID-5), then when you add the first 16 TB drive (or replace a 10 TB drive with a 16 TB), then you won't gain any space. Adding a second 16 TB drive will then give you the 6 TB of extra space.
With dual redundancy (e.g., RAID-6), then you need four 16 TB drives in the system before you get more space (and then you'd bet 12 TB more).
You can disable XRAID and move to FlexRAID to stay with RAID5 when you get to the point XRAID will convert to RAID6. I use RAID5 on my backup 12-bay NAS. As long as you have not vertically expanded the array (replaced drives with larger ones), then you can always go back to XRAID. Manually working with vertical expansion in FlexRAID can get tricky. Going from RAID6 back to RAID5, however, requires destroying and re-creating the volume, however.
Sandshark wrote:You can disable XRAID and move to FlexRAID to stay with RAID5 when you get to the point XRAID will convert to RAID6. I use RAID5 on my backup 12-bay NAS. As long as you have not vertically expanded the array (replaced drives with larger ones), then you can always go back to XRAID. Manually working with vertical expansion in FlexRAID can get tricky. Going from RAID6 back to RAID5, however, requires destroying and re-creating the volume, however.
It certainly seems that with that many drives in play, having RAID 6 is a good idea. Sucks to lose the capacity; sucks more to lose the data. I will most likely leave it in XRAID and just suck it up when it comes time to make the jump from RAID 5 to RAID 6.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
