Promise Technology Pegasus32 R6 - Spare Drives

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Technology BackgroundPegasus32 Product Manual
Spare Drives
Spare drive technology includes:
• Denition(page92)
• Options (page 92)
• Requirements (page 92)
• Transition (page 93)
Denition
A spare drive is a physical drive that you designate to automatically replace the failed physical drive in a
disk array. See “Creating a Spare Drive Manually” on page 69.
The general recommendation is to:
• Provide at least one spare drive
• Congurethesparesasglobalrevertiblespare drives
Options
There are several options you can specify for a spare drive:
• SystemOptions
• Revertible– Returns to its spare drive assignment after you replace the failed physical drive
in the disk array and run the Transition function.
• MediaPatrol– By default, Media Patrol runs on spare drives unless you disable it.
• SpareType
• Global– Can be used by any disk array
• Dedicated– Can be used only by the assigned disk array
• MediaType(type of physical drive)
• Hard Disk Drive (HDD)
• Solid State Drive (SSD)