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Fibre Channel interface
The XP family of disk arrays and the SVS200 s uppor t these Fibre Channel elements:
• Connection s
peeds of 1 Gbps, 2 Gbps, and 4 Gbps (XP12000/XP10000 only)
• Short-wave non-OFC (open fiber control) optical interface
• Multimode optical cables with SC or LC connectors
• Public or pr
ivate arbitrated loop (FC-AL) or direct fabric attach
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.
Device emula tion types
TheXPfamilyofdiskarraysandtheSVS200supportthesedeviceemulationtypes:
• OPEN-3/8/9/E/L/V d evices: O PEN-x logical units represent disk d evices. Except for OPEN-V,
these devices are based on fixed siz es. OPEN-V is a user-definedsize. Supportedemulations
include OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, and OPEN-V devices.
• LUSE d evices (OPEN-x*n) : Logical Unit Size Expansion (LUSE) devices combine 2 to 36 OPEN-x
devices to create expanded LDEVs larger than standard OPEN-3/8/9/E/L/V disk d evices.
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-size d logical disk devices (volumes). (OPEN-V is a C VS-based
custom disk size that you determine. OPEN-L does not support CVS.)
• LUSE (expanded) CVS devices (OPEN-x*n CVS): LUSECVScombinesCVSdevicestocreatean
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.
NOTE:
For the SVS200, and the XP12000/XP10000 when connected to external storage devices, HP
recommends using OP EN-V as the emulation the arra y makes visible to the host. This allows external
storage LDEVs to be c onfigured without losing data. Using any other emulation may cause data loss
in the external storage LUNs.
Failover
The disk arrays suppor t many standard software products that provide host, application, or I/O path
failover and management.
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Installation