In reality, most hard disks seldom see operating temperatures below the chill of a server room or beyond the warmth of rack space, and most disks will not commit an URE that crashes a RAID-5 rebuild. While it is agreed that better parity schemes exist, the exception is not the rule. My customer could have retained cold storage data to individual disks via removable drives, with no redundancy at all. In fact, most organizations already use a single removable disk or cloud container for their nightly backup routine. My customer choose a special backup appliance that fits three disks into a single cartridge, further protecting archived data and proving RAID-5 still has business applications.
Ron is a non-binary tech writer that presently identifies as a reviewer but is currently transitioning toward modding.
March 14, 2018
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