Manual

2 Zone group concepts and device mappings

Zone group concepts

Zone groups allocate resources for device load balancing purposes and for selectively allowing

access to data. For planning purposes, zone groups and assignments can be pre-configured, even

if servers or disk drives are not yet installed.

Types of zone groups:

• Switch port zone groups—Group together one or more ports on the SAS BL Switch. Server

device bays assigned this type of zone group have access to the storage enclosures or tape

devices connected to the ports included in the zone. This type of zone group is for shared

SAS devices. The P2000 G3 SAS MSA and HP MSL2024, MSL4048, and MSL8096 Tape

Libraries and 1/8 G2 Tape Autoloader are examples of shared SAS devices. All LUNs in the

controller enclosure are accessible to the assigned servers, unless controlled through the storage

management utility for the controller enclosure and all tape drives in a tape device are

accessible to any server that has access to the zone group.

• Drive bay zone groups—Group together drive bays from one or more MDS600 drawers or

D2000 disk enclosures. Server device bays assigned this type of zone group have exclusive

access to the drive bays included in the zone group, as if the drives are directly connected to

those servers. This type of zone group is for zoned SAS storage enclosures. The MDS600 and

D2600/D2700 enclosures are examples of zoned SAS storage.

As shown in the following table, configuration (zoning type) procedures are the same for shared

SAS storage enclosures and tape devices, but differ for zoned SAS storage enclosures:

Zoning typeType of connected external device

Switch portShared SAS storage enclosures (P2000 G3 SAS MSA)

Drive bayZoned SAS storage enclosures (MDS600 and D2600/D2700)

Switch portTape devices

Device mappings

IMPORTANT: Depending on the BladeSystem c-Class enclosure model, server type, mezzanine

slot used, and BladeSystem server device bay, the SAS BL Switch must be installed in specific

BladeSystem interconnect bay row. The following tables show the interdependencies of components

in an HP BladeSystem c-Class solution that includes SAS BL Switch connected to external SAS

storage enclosures.

Device mappings for the c3000 BladeSystem enclosure:

BladeSystem c-Class

interconnect bay

Mezzanine slotServer typeBladeSystem c-Class

enclosure model

3/4

2Half height

c3000

Full height

Double wide

(BL680c G7)

Zone group concepts 9