HP 6Gb SAS Switch for HP BladeSystem c-Class - Manual (Page 9)

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 type Type of connected external device
Switch port Shared SAS storage enclosures (P2000 G3 SAS MSA)
Drive bay Zoned SAS storage enclosures (MDS600 and D2600/D2700)
Switch port Tape 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
nl interconnect bay
Mezzanine slot Server type BladeSystem c-Class
nl enclosure model
3/4
2 Half height
c3000
2
Full height
3
2
Full height
nl Double wide
nl
3
(BL680c G7) 4
7
Zone group concepts 9