Our EMC CEs installed an FCO on our DMX and VMAX (2 x seperate FCOs) and conducted a "Hurricane Disk Drive Scan" of our Arrays.

We have to replace 62 disk drives in our DMX and 175 disk drives in our VMAX! 

Apparently the Hurricane Drives have a problem and "may" fail.  The scan identifies Hurricane Drives with a potential problem.

Has anyone heard of this?  Has anyone done this?  Do you know any more than me?

1.  What is the problem?

2.  Is there any impact on the Arrays when they do this?

3.  They are doing currently replacing 4 disks/day on the DMX, with no side-effects that we can tell.

4.  They want to bring in a "Clone Appliance" and connect it to the VMAX, and they say they can then replace 8 drives/day on the VMAX, but there may be a performance impact, and they may have to cut back on the number of drives replaced per day to less than 8, like 5 or 4.

I'm interested in your experience stories.

    Stuart