ES255-C4:pSOS StorEdge T3 Array

Upon completion of this module, you should be able to:
Describe the Sun StorEdge T3 Array boot process
List the plug-in Silicon Operating System(pSOS) commands
Configure environmental parameters
Upgrade the Sun StorEdge T3 Array firmware
Create redundant array of independent disks(RAID) volumes on the Sun StorEdge T3 Array
Configure global system parameters
Enable array fault monitoring

 

The Boot Process
EPROM flash-memory device(FMD) contains code that functions as the system boot loader
FMD supports three boot modes:
  none-Boots the EPROM firmware; does not load the controller software
  tftp-Loads the controller software from a tftp boot server
  auto-Loads the RAID software from the master control system area on the default boot disk(uldl)
The default bootmode parameter is set to auto

 

The FMD is responsible for booting the RAID software, which is normally stored in a reserved partition on the master controller's drives. The FMD can also load the RAID software from any server on the network using the tftp protocl.
In the event the Sun StorEdge T3 Array fail to boot from its local disks due to corrupted or inaccessible RAID firmware, you can use the procedure in configuring a tftp boot server as a method of recovery

 

Updating the Master Control System Area
To place a copy of the RAID controller firmware in the system area reserved on all disks in the master controller unit, enter:
T3:/:<1>boot -i nb101.bin

 

Verifying Firmware Levels
  The four different types of firmware are:
  RAID controller
  EPROM
  Disk drive
  UIC
Connect to Sun StorEdge T3 Array using a telnet session
Type ver to identify controller firmware level
Type fru list to identify disk drive, UIC, and EPROM firmware levels

 

Upgrading the Array's Firmware
Retrieve the firmware files from
web site
File names at the time of this writing are:
  nb101.bin-RAID controller firmware
  ep2_10.bin-EPROM firmware
  lpc_04.11-UIC firmware
  ST118202F.d33a.fw-FC-AL drive firmware
Use these commands to upgrade the firmware:
boot-Upgrades the RAID controller firmware
ep-Upgrades the EEPROM firmware
lpc-Upgrades the UIC firmware
disk-Upgrades the disk module firmware

 

To upgrade the RAID controller firmware, enter:
T3:/:<1>boot -i nb101.bin
To upgrade the EEPROM, enter:
T3:/:<2>ep download ep2_10.bin
To upgrade the UIC, enter:
T3:/:<3>lpc download u111 lpc_04.11
T3:/:<4>lpc download u112 lpc_04.11
To upgrade the disk modules, enter:
T3:/:<5>disk download uldl-9 ST118202F_d44a.fw

 

Modifying Global System Parameters
Global system parameters include the following:
  Cache block size
  Partner group multipathing
  Cache mode
  Mirrored cache
  LUN reconstruction rate
  Volume verification
  Cache read-ahead threshold

 

The cache buffers are allocated on a least-recently-used(LRU) basis. The state of any cache buffer can be:
Empty-The cache buffer has not been allocated and has no previous data in it
Clean-The cache buffer has been allocated and filled with data that has been written to disk
Dirty-The cache buffer has been allocated and filled with data; however, it has not been written to disk

 

Creating RAID Volumes
Volume configuration parameters include:
  Volume name
  Volume size-Range of drives(und1-d9)
  RAID level-RAID 0,1,or 5
  Hot-spare availability-Can only use Disk Drive 9(und9)
Volumes cannot be reconfigured, only created or deleted
Use the vol add command to create the volume
t3:/:<1>vol add volume-name data undn-n raid n standby und9

The pSOS environment provides a suite of basic UNIX commands for file manipulation and directory navigation. The pSOS environment does not provide a file editor. You must edit all files on an administration host, and then use ftp to copy them to the Sun StorEdge T3 Array

 

Three set commands direct syslog system messages:
  set logto-Configures the destination
  set loglevel-Filters the generated messages
  set logmask-Not for general use