Highpoint RocketRAID 1640 Manual de usuario descargar pdf (Pagina 60)

Appendix A

A-2

RAID 5

RAID 5 includes a rotating parity array, thus, all read and write operations can be

overlapped. RAID 5 stores parity information but not redundant data. It requires at

least three disks to provide the most economic way to maximize data capacity with

faster transfer rate.

JBOD

JBOD is an acronym for Just a Bunch of Disks. It is used to refer to hard disks that

aren't configured according to RAID a subsystem of disk drives that improves

performance and fault tolerance. JBOD provides much more capacity (the sum of all

the disks). If there is more than a single physical disk (not member of an array and

not an ATAPI device or a removable disk), you can create a JBOD array.

Serial ATA

Serial ATA is an evolutionary replacement for the IDE ATA physical storage

interface.Serial ATA is scalable and will allow future enhancements to the computing

platform.

Broken Array

Disk array with a member disk failed. A broken RAID 1, RAID 5 or RAID 1/0 array

can still function with the remained normal disks, but a broken RAID 0 or JBOD will

no longer function.

Rebuild

The ability to use a new disk to replace the failed disk in a redundant disk array (say

mirror array, 1/0 array or 5 array), then to repair the broken disk array and recover all

the data on that failed disk.

Duplicate

The operation of duplicating user data to generate backup data within a RAID 1

array. Also known as Synchronize.

Spare Disk

A spare hard disk which can automatically be used to replace the failed member of a

redundant disk array and then automatically recover the redundant disk array

without intervention.

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Highpoint RocketRAID 1640 Manual de usuario Pagina 60