HP-UX 11i September 2002 Release Notes

New and Changed Disk and File Management Features
HP Fibrechannel High Availability Disk and Closure
Chapter 11
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HP Fibrechannel High Availability Disk and Closure
The HP Fibrechannel High Availability Disk and Closure, also referred to as the FC10,
is a Mass Storage Subsystem disk enclosure. This is the design center for Fibre
Channel-Arbitrated Loop and future SCSI Enclosures (SES). Some of the features of the
FC10 are as follows:
• enclosure temperature, fan speed, and power supply monitoring
• fault tolerance through redundancy of disk paths, IO modules, fans, and PSs
• FC-AL interconnect redundancy to disks and host
• hot pluggable disk modules, fans, and power supplies
• support for proactive maintenance
Fibre Channel Mass Storage Diagnostic Message and
Kernel Tunable
The Fibre Channel Mass Storage product will return the following diagnostic message if
the disk device violates the Fibre Channel Standard: ECB_FRAME_RECV_BEFORE_ADISC
You will see the this error message in the kernel log file. If this message is received
frequently and persistently, please contact your HP Customer Support Representative.
Fibre Channel Mass Storage has a new kernel tunable: fcp_large_config. In a Fibre
Channel Mass Storage configuration, if this parameter is set to 1, it allows for large
loops with up to 126 nports. For example:
fcp_large_config 1
If the parameter is set to 0, you are limited to less than 64 nports.