Areca ARC-1110, Руководство пользователя

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INTRODUCTION
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1E Also known Block-Interleaved Parity.
Data and parity information is subdivided
and distributed across all disks. Parity must
be the equal to the smallest disk capacity
in the array. Parity information normally
stored on a dedicated parity disk.
3 Lower
than RAID
6;
Higher
than
RAID 3, 5
Transfer
rates more
similar
to RAID
1 than
RAID 0
Reads are twice as fast
as a single disk;
Writes are similar to a
single disk.
3 Also known Bit-Interleaved Parity.
Data and parity information is subdivided
and distributed across all disks. Parity data
consumes the capacity of 1 disk drive.
Parity information normally stored on a
dedicated parity disk.
3 Lower
than RAID
1, 1E, 6;
Higher
than a
single
drive
Reads are
similar to
RAID 0;
Writes are
slower
than a
single disk
Reads are close to be -
ing twice as fast as a
single disk;
Writes are similar to a
single disk.
5 Also known Block-Interleaved Distributed
Parity.
Data and parity information is subdivided
and distributed across all disk. Parity data
consumes the capacity of 2 disk drive.
3 Lower
than RAID
1, 1E, 6;
Higher
than a
single
drive
Reads are
similar to
RAID 0;
Writes are
slower
than a
single disk
Reads are similar to
RAID 0;
Writes are slower than
a single disk.
6 RAID 6 provides the highest reliability. Sim -
ilar to RAID 5, but does two different parity
computations. RAID 6 offers fault tolerance
greater that RAID 1 or RAID 5. Parity data
consumes the capacity of 2 disk drives.
4 highest
reliability
Reads are
similar to
RAID 0;
Writes are
slower
than a
single disk
Reads are similar to
RAID 0;
Writes are slower than
a single disk.