SAS_Controller

   The SAS utility (SAS$UTIL) is supported on I64 systems only. 

   The SAS utility is an OpenVMS system management and diagnostic 
   tool that is capable of configuring Integrated RAID (IR) 
   functionality for the HP 8 Internal Port Serial Attached SCSI 
   Host Bus Adapter (SAS Controller).
 
   Integrated RAID (IR) is used where extra performance, storage 
   capacity, or redundancy of a RAID configuration, or all three, 
   are required.  OpenVMS Version 8.3 supports Integrated RAID 1 or
   Integrated Mirroring (IM) and its associated Global Hot Spare 
   capability.

   Each SAS Controller can have a single Global Hot Spare disk available 
   to both IM volumes, making them even more fault-tolerant. The Global
   Hot Spare disk automatically replaces a failed IM disk. When the 
   failed disk is replaced in the same physical location, the new disk 
   automatically becomes the new hot spare disk.


                                  NOTE
    OpenVMS Version 8.3 supports only internal (direct-attached) SAS 
    drives.


   You must have SYSPRIV privilege to run the SAS utility.
   

   To invoke SAS utility, enter the following command at the DCL prompt:

     $ RUN SYS$SYSTEM:SAS$UTIL

   The SAS utility returns the following prompt:

     SAS> 

   You can enter SAS commands using the standard rules of DCL syntax.
   Enter Help after the SAS> prompt to obtain help on SAS commands.

   To exit the SAS utility and return to the DCL prompt, enter the
   EXIT command after the SAS> prompt or press Ctrl/Z.