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.