Installing And Configuring The Fcas; Wwn; Setting The Disk And Device Parameters - HP StorageWorks P9000 Configuration Manual

Installing and configuring the FCAs

Install and configure the FCA driver software and setup utilities according to the manufacturer's
instructions. Configuration settings specific to the P9000 array differ depending on the manufacturer.
Specific configuration information is detailed in the following sections.

WWN

The FCA configuration process might require you to enter the WWN for the array port(s) to which
the FCA connects. Your HP representative can provide you this information or you can display this
information on the SAN switch.

Setting the disk and device parameters

The queue depth parameter (max_throttle) for the devices must be set according to one of the
options specified in
Table 21 Max throttle (queue depth) requirements for the devices (Solaris)
Queue depth option
Option 1
Option 2 (preferred)
NOTE: You can adjust the queue depth for the devices later as needed (within the specified
range) to optimize the I/O performance.
The required I/O time-out value (TOV) for devices is 60 seconds (default TOV=60). If the I/O TOV
has been changed from the default, change it back to 60 seconds by editing the sd_io_time
or ssd_io_time parameter in the /etc/system file.
You may also need to set several other parameters (such as FC fibre support). See the user
documentation that came with your FCA to determine whether other options are necessary to meet
your operational requirements.
NOTE: Use the same settings and device parameters for all systems. For Fibre Channel, the
settings in the system file apply to the entire system, not to just the FCAs.
To set the I/O TOV and queue depth for the devices:
1. Make a backup of the /etc/system file: cp /etc/system /etc/system.old.
2. To assure you use the default TOV, make sure that no sd_io_time values are set in the
/etc/system file or modify the /etc/system file to show the following values:
set sd:sd_io_time=0x3c
set ssd:ssd_io_time=0x3c for Oracle generic FCA
Table 21 (page 79).
Requirements
P9000: Queue_depth 2048 default.
CAUTION: The number of issued commands must be
completely controlled. Because queuing capacity of the
disk array is 2048 per port , you must adjust the number
of issued commands from Solaris system to less than 2048.
Otherwise, memory allocate failed messages may occur
on the Solaris system, and all read/write I/O may stop,
causing the system to hang.
P9000: Number of LUs x queue_depth
queue_depth 32
Installing and configuring the host
2048 and
79