Go back to HP0-J62 - HP Storage Solutions Foundation

Question :-

A company is using several RAID 5 volumes for their data. To decrease the risk of a disk failure, they want to add a single drive to their HP StoreSure 2000 Storage array as an automatic replacement for the failed disk. What is the name of the automatic replacement?
Array safety disk
Standby RAID LUN
Global online spare
Hot swap disk

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