ATTO Technology VT-Class Diagnostics, Upgrade and Maintenance, Power On Self Test Post Each time

9.0 Diagnostics, Upgrade and Maintenance

The Diamond-VT provides a number of visual, audible and computer system-generated indicators to identify the operational status of the array. System status and error information is readily available. Various methods are available to correct problems or to upgrade equipment and firmware.

RS-232 Monitoring Port and CLI One tool to

support a Diamond-VT is a host computer with an RS-232 port and terminal emulation software. Using this computer, you can hook up a null modem serial cable to the RS-232 port on the Diamond-VT management card and control the array via the Command Line Interpreter (CLI) management software built into the array. The CLI can be used to configure the unit, modify key parameters and read back key system information. (See Accessing the Diamond-VT on page 15)

Ethernet Monitoring Port and CLI If the optional

Ethernet management system card has been installed, you may use the RJ45 Ethernet port and Telnet to access the CLI software on the Diamond-VT. Use the same CLI commands to configure, modify or read key systems information (see Accessing the Diamond-VT on page

15)or the ExpressNAV browser-based interface. If you restart the array, the Telnet session will end and the session cannot be re-established until the array completes its Power On Self Test.

Power On Self Test (POST) Each time the

Diamond-VT array is powered up, it will perform a series of internal tests called POST (Power on Self Test). The POST sequence takes from 1 to 2 minutes to complete.

The Diamond-VT LEDs will blink at various points in the test sequence and, if the RS-232 system management port is connected, a list of tests and test results will scroll across the screen. When the POST is nearly complete, all the LEDs on the array will flash simultaneously twice in a row. If the system is fully operational, the ready LED will be lit and the unit is ready to be accessed. If the POST fails, the System Fault LED will be lit and an error code will be flashed.

Ready LED The Ready LED (RDY) indicates the operational status of the Diamond-VT.

57

At power up, the green Diamond Array Ready (RDY) LED is disabled until successful completion of the POST (Power On Self Test) indicating the array is ready for normal operation. If a host computer is hooked to either Fibre Channel or SCSI port, the Ready LED will momentarily blink and then stay lit if the connection is good. If that host is rebooted, the Ready LED will blink again and stay on once the connection is reestablished.

Audible Alarm The Diamond-VT audible alarm warns of potential problems or faults. It beeps twice at power up to indicate it is operational and will beep repeatedly when the System Fault (FLT) light on the system management card is activated. The alarm will turn off when the fault condition is cleared or the alarm can be disabled by issuing an

AudibleAlarm disabled or PowerAudibleAlarm

disabled command via CLI as described in Maintenance Services Commands on page 38. Disabling the alarm for a specific error will not silence the alarm for other errors.

Thermal Monitoring The Diamond-VT provides advance warning of temperature problems through visual, audible and software warning mechanisms and through an automatic system which protects the disk drives under abnormal operating or ambient conditions.

The Diamond-VT will function under normal external operating temperatures of 5°C and 40°C. Temperature sensors provide data to the software to trip a temperature warning alarm and will, at excessively high or low temperatures, flush cache memory to prevent data loss and disable disk drive activity to protect the drives. The Diamond reports the temperature via SES, SNMP, CLI and the Status page of the ExpressNAV interface as well as the state of the temperature warning alarm

(Not Present, OK, Warning, Critical). The

ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual