Partners SurfRAID TRITON Mini, User Manual

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Introduction
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1.4 Array Definition
1.4.1 RAID Set
A RAID Set is a group of disks containing one or more Volume Sets. It is
impossible to have multiple RAID Sets on the same disks.
A Volume Set must be created either on an existing RAID Set or on a group
of available individual disks (disks that are not yet a part of an RAID Set). If
there are pre-existing RAID Sets with available capacity and enough disks for
the desired RAID level, then the Volume Set will be created in the existing
RAID Set of the user’s choice. If physical disks of different capacity are
grouped together in a RAID Set, then the capacity of the smallest disk will
become the effective capacity of all the disks in the RAID Set.
1.4.2 Volume Set
A Volume Set is seen by the host system as a single logical device. It is
organized in a RAID level with one or more physical disks. RAID level refers
to the level of data performance and protection of a Volume Set. A Volume
Set capacity can consume all or a portion of the disk capacity available in a
RAID Set. Multiple Volume Sets can exist on a group of disks in a RAID Set.
Additional Volume Sets created in a specified RAID Set will reside on all the
physical disks in the RAID Set. Thus each Volume Set on the RAID Set will
have its data spread evenly across all the disks in the RAID Set. Volume
Sets of different RAID levels may coexist on the same RAID Set.
In the illustration below, Volume 1 can be assigned a RAID 5 level of opera-
tion while Volume 0 might be assigned a RAID 0+1 level of operation.