HP 3Gb SAS Switch for HP BladeSystem c-Class - Manual (Page 9)

• Server bays that need access to external storage must be assigned the appropriate zone group.
• A server bay can be assigned multiple zone groups.
• A switch-port zone group can be assigned to more than one server bay.
• Unpopulated server bays can be assigned a zone group.
• Disk drives in the storage enclosure are configured into logical units (LUNs) using a storage-enclosure
based utility such as the HP Storage Management Utility (SMU). Access or restrictions to the LUNs
is controlled through mappings or other presentation methods, which grant specific server bays
access to specific LUNs.
Zoned storage enclosures
When zoned storage enclosures are attached to the switch:
• The storage enclosure includes I/O modules (does not include a RAID array controller). An example
of a zoned SAS storage enclosure is the MDS600.
• The BladeSystem server blade must have a RAID array controller installed, and is used for its RAID
configuration capabilities.
• The switch is configured using drive bay zone groups. The group of drive bays is presented to the
server bay as if it was directly connected to that server bay.
NOTE:
Unpopulated drive bays in the storage enclosure can be included in a zone group, to help plan
for future growth.
• The server bay that needs access to drive bays must be assigned to the appropriate zone group.
• A server bay can be assigned multiple zone groups.
• A drive-bay zone group can be assigned to only one server bay.
• Unpopulated enclosure server bays can be assigned zone groups.
• Disk drives in the storage enclosure are configured into logical units (LUNs) using host-based
configuration utilities such as HP Array Configuration Utility (ACU).
Tape devices
When tape devices are attached to the switch:
• The tape device is configured using switch port zone groups. The entire tape device connected to
that switch port is presented to all server bays granted access to the zone group.
NOTE:
Unused switch ports can be included in a zone group, to help plan for future growth.
• Server bays that need access to tape devices must be assigned the appropriate zone group.
• A server bay can be assigned multiple zone groups.
• A switch-port zone group can be assigned to more than one server bay.
• Unpopulated server bays can be assigned to a zone group.
3Gb SAS BL Switch User Guide 9