Avastor XD5 Manual do utilizador - Página 16

Procurar online ou descarregar pdf Manual do utilizador para Invólucro Avastor XD5. Avastor XD5 19 páginas. Desktop raid

exists on the backup drive. Important files (accounting, financial, personal

records) are commonly stored using RAID 1.

In RAID 1 mode, if one of the disks fails, the data is still available.

RAID 10

RAID 10 offers the combined benefits of RAID 1 and 0 with twice the capacity of

RAID 1. Four drives are controlled as a single larger drive. RAID 10 is a pair of

RAID 1 pairs for higher failure tolerance. The two RAID 1 sets are combined in a

RAID 0 configuration for improved read and write performance.

RAID 10 is an excellent solution for Audio/Video professionals who require high

performance, as well as a high fault tolerance. Great for live broadcast/remote

recording.

RAID 10 can sustain one drive failure in each RAID 1 pair. RAID 10 offers fast

performance with superior redundancy.

RAID 3

RAID 3 is the least used of the RAID modes. RAID 3 uses one dedicated drive in

the array to store parity data

. Bytes of data are split and stored on the

remaining drives of the array. It offers high read and write transfer rates with a

high level of fault tolerance. A minimum of three drives is required.

Write performance can be slower than RAID 5 due to parity calculation overhead

and the bottleneck of a dedicated parity drive.

RAID 5

RAID 5 parity data is spread across all drives versus being stored in a single drive

as with RAID 3. RAID 5 reserves space equal to the capacity of one drive in the

array for parity data

. Read data transactions are fast while write data

transaction are somewhat slower than RAID 10 but faster than RAID3. In the

event of a single drive failure, data can still be accessed.

One of the most common and versatile RAID modes, RAID 5 is ideal for

balancing performance, storage capacity and fault tolerance.

COMBINE (Non-RAID)

COMBINE - also known as Large or Span, provides another maximum capacity

solution. COMBINE combines multiple hard drives into a single logical unit.

Unlike RAID 0, COMBINE writes data to the first drive until it reaches full capacity

then data is written to the second drive, and so on up to 5 drives. COMBINE

provides the maximum possible storage capacity, but does not increase

performance.

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