ATTO ExpressSAS Host and RAID Adapter Installation and Operation Manual

Appendix B Configuration and ManagementDriver ConfigurationUse the esxcfg-module command to query andconfigure the ATTO adapter driver parameters. In theexamples that follow, should bereplaced with the ATTO driver name.To obtain a list of available driver parameters:# esxcfg-module -i To list the driver parameters that have been set:# esxcfg-module -g To set a driver parameter:# esxcfg-module -s param=value Configuration changes made with the esxcfg-module -s command are persistent across system reboots.However, the changes will not take affect until thesystem is rebooted.The following table lists the configurable parametersalong with a brief description.PARAMETERatto_log_maskatto_max_sectorscan_queuechange_notificationcmd_per_luncmd_retry_countevent_log_maskheap_initialheap_maxio_time_outnum_sas_addrDESCRIPTIONDefines the log mask for sending ATTO driverinformation to the system log. Default is 0 (none).Maximum number of disk sectors in a single datatransfer. Default is 65535 (largest possible value).Maximum number of commands per adapterchannel. Default is 128.Enable notifying the OS of the arrival anddeparture of target devices. Default is 1 (on).Maximum number of commands per LUN. Defaultis 16.Maximum number of retries allowed for acommand. Default is 20.A bit mask of events to report to the system log.Default is 0x00000001 (crtitical events only).Initial heap size allocated for the dirver.Maximum attainable heap size of the driver.Time (in seconds) before an I/O command is timedout by the driver. Set to 0 for no timeout. Default is30.Number of SAS addresses to assign to theadapter's PHYs. Addresses are assignedsequentially from the base address. Valid settingsare 1, 2, 4, 8. Default is 1.num_sg_lists Number of SGL pages. Default is 256.iii ATTO Technology Inc. ATTO ExpressSAS Host & RAID Adapter Installation and Operation Manual