HP XP Command View Advanced Edition Software User Manual
Page 20
Device Manager Operations 20
for each storage subsystem on which the LUN Scan is performed. This logical group is created in the
LUN SCAN group of the Logical Groups object. Beneath the logical group, a storage group is created for
each port and host, and all unregistered LUNs are placed in this storage group. The LUN scan also
causes Device Manager to register unique hosts for all WWNs in the storage subsystem. The properties
of the host registered by Device Manager are updated when the Device Manager agent reports
information about the host.
You must perform a LUN scan in the following sequence:
a.
During Device Manager initial setup, you must register all hosts (host names and WWN) in the
Device Manager server before performing the LUN Scan. The hosts are registered to the Device
Manager server by manually entering them via Device Manager's Web Client or CLI, or by being
notified from the Device Manager agent.
b.
When storage on an existing storage subsystem has been assigned to one or more new hosts not
recognized by Device Manager, make sure that the hosts are registered to the Device Manager
server before performing a LUN scan operation.
c.
If there are no new hosts, you can perform a LUN scan operation immediately after a storage
subsystem discovery and after a storage subsystem refresh operation.
•
Refresh. The refresh operation (see section
10-1-4
) rediscovers a storage subsystem. Perform a refresh
operation when changes have been made to the storage subsystem other than through the Device
Manager system.
•
Alert Presentation. Device Manager displays SNMP traps, errors, and other conditions for each storage
subsystem that has been added to the Device Manager server (see section
5-5
).
•
Path Assignment. Device Manager allows you to add and delete volume paths (specifying ports and LUN)
for devices on the storage subsystems (see sections
8-4
and
8-5
).
2-3-1 Configuring the StorageWorks XP12000/XP10000 Storage Subsystem
Device Manager supports the following storage subsystem and volume configuration functions for the
StorageWorks XP12000/XP10000 storage subsystem:
•
Configure ports. Device Manager allows you to configure the host mode and fibre topology settings for
the fibre-channel ports on the StorageWorks XP12000/XP10000 storage subsystem.
•
Configure adapters. Device Manager allows you to configure the speed mode for the fibre-channel
adapters on the StorageWorks XP12000/XP10000 storage subsystem.
•
Create/Delete LDEVs. Device Manager allows you to create new LDEVs and delete existing LDEVs on
the StorageWorks XP12000/XP10000 storage subsystem.
•
Configure LUN Expansion (LUSE). Device Manager allows you to configure custom-size LUSE volumes
on the StorageWorks XP12000/XP10000 storage subsystem. A LUSE device is a combined LU which
can be from 2 to 36 times larger than a standard OPEN-x LU. LUSE devices are created from unallocated
LDEVs.
You can create a StorageWorks XP12000/XP10000 LUSE device that does not have a volume path (see
section
8-6
). You can also create a StorageWorks XP12000/XP10000 LUSE device when allocating a
volume path to an LDEV (see section
8-4
) or when adding storage to a storage group (see section
7-6-2
).
•
Add/Delete volume paths. Device Manager allows you to add and delete volume paths (specifying ports,
host storage domains, and LUNs) for the LDEVs on the connected StorageWorks XP12000/XP10000
storage subsystems.
NOTE:
Regarding High Availability: Device Manager allows you to configure multiple paths to volumes
as needed for path failover capability.
For details, refer to the HP StorageWorks LUN Configuration and Security Manager XP User Guide for
the XP12000/XP10000.
•
External Storage XP. In a StorageWorks XP12000/XP10000 storage subsystem, volumes of another
storage subsystem connected via a SAN can be handled as virtual StorageWorks XP12000/XP10000
volumes. This feature is called the External Storage XP. For details about External Storage XP, see
section
4-6
.
•
Cache logical partition function. A StorageWorks XP12000/XP10000 that can use Disk/Cache Partition
can logically divide a cache normally shared in a storage subsystem into partitions, allocate them to parity
groups, and manage them. This function is called the cache logical partition function. A partition of the
cache is called a CLPR (cache logical partition).