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NAS 1200s Failure questions - what is supposed to happen ?

 
Robert Hough
New Member

NAS 1200s Failure questions - what is supposed to happen ?

Hello, hope you can help.

When a disk in the NAS1200s fails what is supposed to happen ?
We set our E-mail notification up (and tested it successfully) - then removed a Disk - which we assumed would be a critical error, and it told us nothing.
We then replaced the disk sometime later expecting the server to re-sync the drives only to find you seem to have to do it manually.
Also it seems to allows you to remove 2 of the disks at a time - which seriously cannot be a good thing on a RAID 5 system.

So my questions are:
a) It the Server supposed to warn you of a failed disk, or are you supposed to manually check it in Disk management every 15 minutes ?

b) Is the server supposed to rebuild itself when you replace a disk or it it a manual action ?

c) Is there supposed to be a locking mechanism to stop you removing more than 2 disks at a time ?


2 REPLIES 2
CA1118839
Valued Contributor

Re: NAS 1200s Failure questions - what is supposed to happen ?

a) The email notifications are setup for application type of events. For example, email alert will be sent when things like quotas are exceeded but will not tell you anything about the hardware state. So, you won't see an alert email if you lose a disk drive.

b) No auto-rebuild. It is software RAID in the OS. Must break the RAID set and re-create it.

c) If you mean a physical lock, then no. Software locks would not work.

This is all very typical stuff for Windows-implemented RAID. Same behavior on a generic windows server.
CA1127959
New Member

Re: NAS 1200s Failure questions - what is supposed to happen ?

question (c):

The only locking mechanism that would prevent someone from removing two disks in an active RAID 5 set is called a brain. This, however, makes for an excellent Disaster Recovery exercise.