Forum Discussion

Aspirant

Nov 17, 2015

Solved

Replacing disk in a single drive ReadyNAS 102

ReadyNAS 102 with a single 4TB WD drive was having some quirks after about 1.5 years. NAS says drive is healthy, WD Diags from a desktop says bad sectors. I have a replacement drive but I am concer...

Adding Disks

Installation & Upgrade

StephenB
Nov 29, 2015
You can run the drive test from the GUI.

Select "volumes", then the settings wheel, and then "volume schedule". One of the choices you can schedule is "disk test".

It really should also be on the main settings wheel, not sure how that got overlooked.

Grill-n-Chill

Aspirant

Dec 22, 2015

Definitely time? Why? This is a backup device, not a server. I don't see the value of internal mirroring on a small office backup device; money would be better spend elsewhere. For example I prefer to make redundant backups to different backup systems. This NAS drive is one of three backups - two local, one offsite, all monitored daily for functionality (which is how I detected this issue). If one fails it is ulikely the other backups would be impacted. At least that's my opinion.

StephenB

Guru - Experienced User

Dec 22, 2015

Grill-n-Chill wrote:

This NAS drive is one of three backups - two local, one offsite, all monitored daily for functionality (which is how I detected this issue). If one fails it is ulikely the other backups would be impacted. At least that's my opinion.

I agree that two independent local backups trumps RAID-1.

realmcom
Aspirant
Dec 22, 2015
I was not aware this was purely a backup device, I made the error of assuming that this would be a production device. Therefore my recommendation would have made good sense. In that it is one of multiple backups, yeah no problem. JBOD is fine.

Also, backups shouldn't "trump" a RAID setup - RAID is not a backup and the two shouldn't be compared. RAID is a failsafe to minimise downtime in case of drive failure, but it won't bring back that Excel spreadsheet the receptionist accidentally deleted last week.
Grill-n-Chill
Aspirant
Dec 22, 2015
I think StephenB may have been implying that two independent backup devices trump a single RAID backup device... as it applies to my scenario with backup devices, not file sharing.

Personally I make it a point to never trust backups. The real game changer for us was when we started monitoring functionality of the backups and the health of the backup device hardware for our clients. No more nasty surprises.
realmcom
Aspirant
Dec 22, 2015
I think we have come, in a round-a-bout kind of way, to find that we are all in agreeance with each other! Definitely multiple backups (including at least one offsite).

I also offer monitoring as a service, definitely less surprises to those clients.
StephenB
Guru - Experienced User
Dec 22, 2015
Grill-n-Chill wrote:

I think StephenB may have been implying that two independent backup devices trump a single RAID backup device... as it applies to my scenario with backup devices, not file sharing.

Correct, that is exactly what I meant.