Addonics Technologies RAID Tower XIII RT134SDMS Benutzerhandbuch - Seite 7

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JBOD Mode (Individual Drives)

Number of drives: at least 1

Unit capacity: N/A (100% of each individual drive)

Spares: no

Fault tolerance: none

JBOD mode offers all connected units to the host adapter, no RAID is defined at all.

NOTE: JBOD mode requires a SATA controller featuring Port Multiplier support for

eSATA connections.

NOTE: Optical drives can only be configured as JBOD using an eSATA connection.

RAID 0 (Stripe set)

Number of drives: at least 2

Unit capacity: size of each member times number of members.

Spares: no

Fault tolerance: none - if any member is lost all data is lost.

RAID 0 "stripes" the file system across the array by placing sectors of data

sequentially between drives in a specific order.

RAID 1 or 10 (Mirror set, Stripe of mirror sets)

Number of drives: 2 (RAID 1) or 4 (RAID 10).

Unit capacity: size of one member (RAID 1) or size of two members (RAID 10).

Spares: yes – if EZ mode is not disabled and 3 (RAID 1) or 5 (RAID 10) drives are

present, the array will be initialized with a spare.

Fault tolerance: RAID 1 can withstand the loss of one drive without losing data.

RAID 10 can withstand the loss of one drive from each mirror set without losing

data.

RAID 1 works by duplicating the exact same data on two drives.

RAID 10 works by using two RAID 1 sets configured as members of a RAID 0.

Disks 1 and 2 are mirrored, disks 3 and 4 are mirrored, and the two mirror sets are

striped together.

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