Configuring the Sun STMS host settings

This section provides instructions for configuring the Sun STMS host settings.

1. Type cd /etc to change to the /etc subdirectory.
2. Backup the system file in the subdirectory.
3. Edit the system file and set the following parameters for servers with configurations that only use Sun Branded adapters:

   ssd_io_time

   This parameter specifies the timeout value for disk operations. Add the following line to the /etc/system file to set the ssd_io_time parameter for the storage unit LUNs:

   set ssd:ssd_io_time=0x78

   ssd_max_throttle

   This ssd_max_throttle parameter specifies the maximum number of commands that the SSD driver can queue to the host adapter driver. The default value is 256, but you must set the parameter to a value less than or equal to a maximum queue depth for each connected LUN. Determine the value by using the following formula:

   256 ÷ (LUNs per adapter)

   where LUNs per adapter is the largest number of LUNs assigned to a single adapter.

   To set the ssd_max_throttle parameter for the storage unit LUNs in this example, add the following line to the /etc/system file:

   set ssd:ssd_max_throttle=5