Device Emulation Types; Failover; Snmp Configuration - HP StorageWorks P9000 - Disk Arrays Configuration Manual

Device emulation types

The P9000 family of disk arrays supports these device emulation types:
OPEN-x devices: OPEN-x logical units represent disk devices. Except for OPEN-V, these devices
are based on fixed sizes. OPEN-V is a user-defined size based on a CVS device. Supported
emulations include OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, and OPEN-V devices.
LUSE devices (OPEN-x*n): Logical Unit Size Expansion (LUSE) devices combine 2 to 36 OPEN-x
devices to create expanded LDEVs larger than standard OPEN-x disk devices. For example, an
OPEN-x LUSE volume created from ten OPEN-x volumes is designated as OPEN-x*10.
CVS devices (OPEN-x CVS): Volume Size Configuration (VSC) defines custom volumes (CVS) that
are smaller than normal fixed-sized logical disk devices (volumes). (OPEN-V is a CVS-based custom
disk size that you determine. OPEN-L does not support CVS.) Although OPEN-V is a CVS-based
device, the product name in the SCSI inquiry string is OPEN-V opposed to the fixed size OPEN-
[389E] devices that appear as OPEN-x-CVS.
LUSE (expanded) CVS devices (OPEN-x*n CVS): LUSE CVS combines CVS devices to create an
expanded device. This is done by first creating CVS custom-sized devices and then using LUSE to
combine from 2 to 36 CVS devices. For example, if three OPEN-9 CVS volumes are combined to
create an expanded device, this device is designated as OPEN-9*3-CVS. OPEN-V devices are
designated as OPEN-V*n (without CVS).
FX Devices (3390-3A/B/C, OPEN-x FXoto): The Data Exchange feature allows you to share data
across mainframe, UNIX, and PC server platforms using special multi-platform volumes. The VLL
feature can be applied to DE devices for maximum flexibility in volume size.
NOTE:
For the P9500 when connected to external storage devices, HP recommends using OPEN-V as the
emulation the array makes visible to the host. This allows configuration of external storage LDEVs
without losing data. Using any other emulation might cause data loss in the external storage LUNs.
For new deployments, use OPEN-V, because some features (such as HP StorageWorks P9000 Snapshot
Software or HP StorageWorks P9000 Continuous Access Journal Software) are only supported with
OPEN-V.
For detailed information, see
emulations" on page 31.

Failover

The disk arrays support many standard software products that provide host, application, or I/O path
failover and management.

SNMP configuration

The P9000 family of disk arrays supports standard SNMP for remotely managing arrays. The SNMP
agent on the SVP performs error-reporting operations requested by the SNMP manager. SNMP
properties are usually set from the SVP but they can also be set remotely using Remote Web Console
Software or Command View Advanced Edition Suite Software . For specific procedures, see the
applicable user guide.
8 Installing and configuring AIX for the P9000 family of disk arrays
"Emulation specifications" on page 31"Disk array supported