HP StorageWorks HSG80 Enterprise Modular Storage RAID Array Fibre Channel Solution Software V8.8 for Sun Solaris Release Notes (AA-RV1SA-TE, March 2005)

Host Operating System Notes
45HSG80 Enterprise Modular Storage RAID Array Fibre Channel Solution Software V8.8 for Sun
Solaris Release Notes
Command Console LUN
The array controller can provide a dedicated communications LUN called the
Command Console LUN (CCL). The CCL can cause some issues under Solaris.
During booting, you receive a corrupt label - bad magic number error because
Solaris “sees” the CCL as a 320MB read-only disk. This message is just a warning
and can be ignored. You may disable the CCL if desired.
Setting maxconfig and rotdelay for File Systems
The overall performance of your configuration can be affected by your choice of
maxcontig and rotdelay values. The maxcontig value specifies the maximum
number of contiguous blocks that are written before inserting a rotational delay.
The
rotdelay value specifies the time (in milliseconds) of the rotational delay.
HP recommends that for optimal performance the
rotdelay always be set to 0.
The
maxcontig value depends somewhat on the number of units that are active in
your controller configuration. In HP testing, values of 128 and 256 blocks have
worked very well. Your exact value depends on the number of storagesets in use.
If your system is reporting excessive numbers of warnings (
ddi_iopb_alloc
failed
or fca_dma_zalloc failed) your value may be too high.
Both the
maxcontig and rotdelay values can be set at the time of file system
creation with
newfs flags, or they can be modified at a later time using tunefs.
When using
tunefs, the file system must be unmounted. See the newfs(1M) and
tunefs(1M) man pages for further details.
Driver Messages
The driver initialization message may reference Solaris Versions 2.5 and 2.6. This
message is incorrect and should be ignored. See “System Components” on
page 31, for supported O/S levels.
Note: Virtual Disk Wizard in multi-bus failover mode is not supported with the Secure
Path driver.