Viewing or Changing the ServeRAID Controller Parameters

Viewing or Changing the ServeRAID Controller Parameters

You can use the ServeRAID Configuration program to view or change the ServeRAID controller parameters.

To view or change the ServeRAID controller parameters:

1.  Start the ServeRAID Configuration program (see 'Starting the ServeRAID Configuration Program').
2.  Select Advanced Functions from the Main Menu,  then, press Enter.
3.  Select Display/Change Adapter Params from the  next menu, then, press Enter.

    A screen similar to the following appears.
   

    
    Description of the choices available from this menu are as follows:
   1.  Help provides information about the choices  available on the menu. You also can press F1  from any screen to obtain online Help.
   2.  Display Adapter Status lets you view the  current settings (On or Off) for Unattended  Mode, CD-ROM Boot, and Read Ahead. You  also can select this choice to view information  about BIOS Compatibility Mapping, logical drive  sizes, and logical drives that are blocked or have  a bad stripe. (See 'Changing the RAID Parameters' for more information.)
   3.  Change Adapter Host/SCSI ID lets you  change the SCSI configuration ID or the SCSI  transfer rate for the ServeRAID controller. You  can change the ServeRAID controller host  configuration ID to any 12 characters. If you are  using Ultra Fast/Wide SCSI-3 drives, you can  change the default SCSI transfer rate from 10  MHz to a maximum of 20 MHz. When the  transfer rate is set to 20 MHz, the SCSI bus for  the ServeRAID controller provides a  data-transfer rate of up to 40MB per second. In  addition, this choice lets you change the number  of hard disk drives in a group that will start up  simultaneously, and set the start-up delay (in  seconds) between groups of drives.
   4.  Set BIOS Compatibility Mapping lets you  change the basic input/output system (BIOS)  mapping from 8GB (default setting) to 2GB.  (For the server, use the default setting.)
   5.  Set Channel - Bank Mapping lets you  specify which direct access storage device  (DASD) bank is connected to the ServeRAID  controller. This mapping is critical for the correct  operation of the &admonr., which uses the  settings to identify drives, to control power to  specific drives, and to operate the SCSI LEDs.

4.  Use the Up Arrow (  ) or Down Arrow (  ) key to  highlight the choice, then, press Enter.
5.  Press Esc to return to the Advanced Functions menu.
6.  Back up the disk-array configuration information to  diskette. See 'Backing Up the Disk-Array Configuration'  for instructions.

Changing Device States: You can use the ServeRAID Configuration program to change the state of a physical hard disk drive attached to the ServeRAID controller.

To change the state of a physical hard disk drive:

1.  Start the ServeRAID Configuration program (see 'Starting the ServeRAID Configuration Program').
2.  Select Rebuild/Device Management from the Main  Menu, then, press Enter.
3.  Select Set Device State from the next menu, then,  press Enter.
4.  Use the Up Arrow (  ) or Down Arrow (  ) key to  highlight the appropriate drive, then, press Enter.  A screen similar to the following appears.
    
    The Drive States pop-up window lists all the hard disk drive states.  (See 'Physical Device States' for more information.)
    The following table shows the current device states and the valid alternate  device states that you can assign. For example, you can change the state of a  standby hot-spare drive from SHS to HSP or DHS.

   Note: Setting a DD drive that is part of a CRT logical drive  to ONL without performing the rebuild process might result in loss of data.  (See 'Understanding the Drive Rebuild Process' for more information.)

           Device States      Alternate States
           EMP                RDY SBY
           SBY                RDY EMP HSP SHS
           DHS                EMP HSP SHS
           SHS                HSP DHS
           DDD                ONL RBL
           RDY                EMP HSP SHS SBY
           HSP                RDY SHS DHS
           ONL                DDD
           RBL                DDD ONL
    

5.  Use the Up Arrow (  ) or Down Arrow (  ) key to  highlight a valid alternate drive state, then, press Enter.
    The new state appears in the Array/Bay selection list.
6.  If you want to change the state of another drive, return to step 4.  Otherwise, continue with step 7.
7.  Press Esc to return to the Main Menu.
8.  Back up the disk-array configuration information to  diskette. See 'Backing Up the Disk-Array Configuration'  for instructions.

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