ATTO Technology Diamond Storage Array VT-Class User Manual
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Troubleshooting
• Follow the instructions in the appropriate
chapters of this manual to remove, replace and
reconfigure the drive such as
• You may copy drives by using Command Line
interface commands. Refer to
If a power supply fails
• Verify the power cord is correctly plugged and
there is power at the power receptacle.
• If there is power, the cord is secure and the
blower and power supply LEDs are off, replace
the blower unit. Refer to
• If there is power, the cord is secure and the
power supply LED is off, but the blower LED is
on, replace the power supply Refer to
• Command Overlap: The Diamond-VT contains
special software to take advantage of the
Command Overlap feature offered in some high
performance disk drives. Because all 24 disk
drives in a Diamond Array may be seeking at the
same time under Command Overlap, only
Diamond-VTs with two operational power
supplies and blower assemblies will support
Command Overlap: the Diamond-VT will
automatically disable the Command Overlap
feature if a power supply fails and notify the
system administrator through the audible alarm
and CLI.
If you cannot read or write to the Diamond-VT
You may have lost connection to the host via the Host
Interface Card. The HIC LED on the back of the
Diamond-VT should be lit green. The amber LED
should go out and the green LED should light when the
connection is complete.
Also check the host bus adapter (HBA) in the host
machine for proper functioning and drivers.
• Verify that the connector and both ends of the
cable are completely seated.
• Try connecting directly to the host, bypassing
any hubs or switches.
To determine if the problem exists with the Host
Interface Card or the connection
• Swap the cable from one HIC to the other HIC.
• If the LED is now green, swap the GBIC and
cable back to the original HIC. If the LED is
green, then the GBIC is defective; if it is amber,
the HIC is defective.
• Swap the defective HIC or GBIC (see
If you can’t access the Diamond-VT CLI via
Ethernet
• Verify there are three or fewer concurrent
sessions using Telnet or FTP. You may be the
fourth session or someone in another session
has entered a command which requires a Save
Configuration command.
• Verify you are using a crossover cable for direct
connection, or a network cable for a network
connection.
• Verify the Diamond-VT is set to IPDHCP
enabled
if you expect an IP address will be
assigned by the network and DHCP is an option
available on the network.
• Verify the IP address is compatible with the host.
• Verify the system is functioning and accessible
via in-band inquires such as Disk Management.
• Try setting your terminal emulator with a
different baud rate, starting at 2400, then 9600,
19200, 38400, 57600, and 115200.
• If you perform a hardware restart, the Ethernet
connection is dropped. You must re-establish
the Ethernet connection.
• If you enter a command that requires a Save
Configuration or RestoreConfiguration
command in either the serial interface window or
the Ethernet connection window, you will not be
able to access the inactive window until the
command is complete in the active window.
• If you still fail to communicate with the Diamond-
VT, swap out the management card and try to
connect using default settings.
If you do not see the appropriate number of
LUNs on the host machine
• Ensure any configuration changes are
appropriate
• Type
FirmwareRestart in CLI
• Re-start the host computer
• Verify all drives associated with the missing
LUN(s) are inserted properly and powered up.