Fibre Channel Interface; Device Emulation Types - HP XP48 Configuration Manual

Fibre Channel interface

Device emulation types

Installation
HP StorageWorks Auto Path XP
HP StorageWorks Cluster Extension XP
HP StorageWorks Performance Advisor XP
The XP family of disk arrays supports these Fibre Channel elements:
• Connection speed of 1 Gbps and 2 Gbps
• Short-wave non-OFC (open fiber control) optical interface
• Multimode optical cables with SC or LC connectors
• Public or private arbitrated loop (FC-AL) or direct fabric attach
• Fibre Channel switches
Even though the interface is Fibre Channel, this guide uses the term "SCSI
disk" because disk array devices are defined to the host as SCSI disks.
The XP 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. 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.)
• LUSE (expanded) CVS devices (OPEN-x*n CVS): LUSE CVS
combines CVS devices to create an expanded device. This is done by
13