HP 3Gb SAS Switch for HP BladeSystem c-Class - Manual (Page 18)

2 Example: Configuring shared SAS storage enclosures
Configuring shared SAS storage enclosures includes the following tasks, performed in sequence:
1. Enabling Multi-initiator Mode.
2. Creating one or more switch port zone groups.
3. Assigning each zone group to each server device bay that needs access to the storage
enclosures associated with that zone group.
4. Capturing the configuration for safekeeping. (Strongly recommended. Available only in VSM
CLI.)
5. Configure disk drives in the storage enclosure into logical storage units (LUNs) using the
management utility supported by the storage enclosure. Access to the LUNs is controlled
through mappings or other presentation methods, which grant specific server device bays to
specific LUNs.
NOTE:
•
The MSA2000sa is an example of a shared SAS storage enclosure.
•
The shared SAS storage enclosure includes a RAID array controller. A RAID controller is
installed on the server, but not used for its RAID configuration capabilities.
•
Use switch-port zone groups with shared SAS storage enclosures. The entire storage enclosure
connected to that switch port is visible to all server device bays granted access to the zone
group that includes that switch port.
•
Each server device bay that needs access to the external storage must be assigned a zone
group.
◦ A server device bay can be assigned multiple zone groups.
◦ A switch-port zone group can be assigned to more than one server device bay.
◦ Unpopulated server device bays can be assigned a zone group.
•
Disks in the enclosure are configured into logical storage units (LUNs) using one of the servers
(or a designated management server) with access to the storage enclosure. Access to the LUNs
is controlled through mappings or other presentation methods, which grant specific server
device bays to specific LUNs.
The following example illustrates configuring a common shared SAS storage zoning configuration,
with one large zone group, including all switch ports on a pair of switches. Assigning the zone
group to each server device bay is also included. For more information about these tasks, see the
following sections:
•
“Advanced Settings task” (page 36)
•
“Create Zone Group task” (page 37)
•
“Modify Zone Access task” (page 43)
18 Example: Configuring shared SAS storage enclosures