HP XP P9500 Storage - Manual (Page 40)

Boundary value (KB) Emulation type
RAID 6 (14D+2P) RAID 6 (6D+2P) RAID 5 (7D+1P) RAID 5 (3D+1P) RAID 1 (2D+2D)
• Boundary values are of external volumes are always one kilobyte, regardless of RAID levels.
•
Hyphen (-) indicates that the combination is not supported.
Capacity of a slot
Capacity (KB) of a slot Emulation type
48 3380-xx
58 3390-xx
Notes:
•
xx indicates one or more numbers or letters.
• Slot capacity is expressed in kilobytes.
Calculated management area capacities (SATA-E drive)
SATA-E (slots) Emulation type
RAID 6 (14D+2P) RAID 6 (6D+2P) RAID 5 (7D+1P) RAID 5 (3D+1P) RAID 1 (2D+2D)
43,653,120 8,017,920 10,913,280 2,004,480 445,440 3390-xx
Notes:
• xx indicates one or more numbers or letters.
•
Calculated management area capacities are expressed in slots.
• A SATA drive supports 3390-xx emulation types for a mainframe system.
Configuring volumes in a parity group
For RAID 5 (7D+1P), RAID 6 (6D+2P), or RAID 6 (14D+2P) a maximum of 2,048 fixed-size volumes
(FVs) and a certain amount of free space are available in one parity group. For other RAID levels,
a maximum of 1,024 FVs and a certain amount of free space are available in one parity group.
Each parity group has the same configuration, and is assigned the same FVs of the same size and
RAID level.
The VLL functions of Delete LDEVs and Create LDEVs are performed on each parity group. Parity
groups are also separated from each other by boundary limitations. Therefore, you cannot define
a volume across two or more parity groups beyond these boundaries.
As the result of VLL operations, a parity group contains FVs, CVs, and free spaces that are delimited
in logical cylinders. Sequential free spaces are combined into a single free space.
The following depicts an example of configuring volumes in a parity group:
40 Configuring custom-sized provisioning