Replace disk without NST

Question

Hi,

I have a CX400 with a disk with the state 'Removed'. A spare disk is running. Now I want to replace this faulty disk. As I read in the documentation, I need the Navisphere Service Taskbar. The problem is, that I have FLARE 2.07 and NST requires 2.16. How can I replace this disk without NST or can I just pull the faulty disk out and put anouther one in the cabinet?

Regards

Volker Jordan

RRR · Answer

In Navisphere you can see if the HS is done rebuilding (right click on the hot spare LUN in the hot spare raid group and choose properties; the rebuild percentage is there: if it's at 100%, the rebuild is done). If so, you can pull the broken disk and put the new one in.

volker_jordan · Answer

If I right click on the LUN of the RAID Group I see Percent Rebuilt 100 but if I right click on the LUN of the spare drive I see N/A. The properties of the RAID Group of the spare drive shows 'Hot Spare Replacing: RAID Group 2'.
Is my faulty disk replaced ?

Volker Jordan

RRR · Answer

You're welcome.If in doubt you can ofcourse always call your EMC CE or your provider.

volker_jordan · Answer

Thanks

RRR · Answer

Ah, my mistake, during the rebuild the LUN's that are in need of a rebuild will show the percentage. After all LUN's are rebuilt, all the LUN's of that RG should be at 100%.
You can safely remove the faulted drive and insert the new one.

Theoretically you can put the new in at any time, but suppose you remove the wrong one and the rebuild is still running ? In that unfortunate case, data is lost. That's why I would wait until the rebuild is completely done, so you know all data is protected again. If you now should remove the wrong one, data is intact.

In front of the DAE with the faulted drive you should now see a reddish light on the faulted drive. Remove that one and insert the new one. The HS will now equalize (some sort of mirroring) to the new drive. This equalization is pretty fast.

CLARiiON

Replace disk without NST

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