Instruction Manual
3
Fast
A storage policy configuration in which I/O processing
is balanced evenly to all disks in a method known as
striping, equivalent to RAID 0.
Fast offers the best performance in terms of speed, but
no data redundancy. Striping increases storage operation
speed by using several disk drives in parallel. Each
portion of data is divided into segments that are written to
different disks simultaneously. Striping provides improved
performance but does not enhance reliability because
there is no way to retrieve or reconstruct data stored on a
failed drive.
To implement the Fast storage policy, the Basic
Configuration Wizard creates a single volume of up to four
hard disk drives in a striped format.
Safe + Big
A storage policy configuration in which one-half of the
available storage space is concatenated. The other half
mirrors the first half to provide full data redundancy.
The Safe + Big storage policy configuration mirrors the
concatenated disks to create a volume consisting of four
disk drives.
Safe + Fast
A volume configuration in which an array of stripes is
created. Each stripe consists of two mirrored drives. Safe
+ Fast provides the I/O load balancing features of striping
and the added reliability of mirrored data, equivalent to
RAID 1+0.
In the Safe + Fast storage policy, data is written to
mirrored disks in a striped format to create a volume
consisting of four disk drives.
