Accusys ExaSAN A08S-PS - Manual (Page 35)

Appendix A – Q&A
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Q7: When inserting the HDD into my A08S-PS, why does RAIDGuard X
show the HDD mode as Lock?
Ans: When a HDD can be locked, it shows that this hard drive contains
metadata created by the A08S-PS, and shows that it was previously
used. To erase the data on the HDD, simply unlock the HDD.
Q8:
How can a spare HDD be set-up?
Ans: The A08S-PS automatically treats an unused HDD as Globe Spare
HDD. If you want to set a particular HDD as a spare HDD, just make
sure you don’t set it as part of an array or JBOD.