Specific situations and suggestions – ATTO Technology Diamond Storage Array S-Class User Manual
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ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
alarm will turn off when the fault condition is
cleared or the alarm can be disabled by issuing a
PowerAudibleAlarm
or
AudibleAlarm
command via
CLI as described in
41. Disabling the alarm for a specific error will
not silence the alarm for other error conditions.
Specific situations and suggestions
For all problems, first check the pages of the
ExpressNAV interface appropriate for the
problem especially the Status and Storage
Management or use the appropriate CLI
commands
If a drive fails to respond
• Determine which drive has failed by observing
the amber fault LED on the drive sled or connect
to the CLI and type driveinfo
for a list of all
drives and their status.
• For specific information on a particular drive in
CLI, type
driveinfo [sled number] [drive
number]. Record all errors.
• Determine if the drive is configured in JBOD or
RAID Level 0.
• Follow the instructions in the appropriate
chapters of this manual for removing, replacing
and reconfiguring the drive (begin with
Operating Instructions on page 71
• 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
Operating Instructions on page 71
• Command Overlap: The array 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
arrays with two operational power supplies and
blower assemblies will support Command
Overlap: the array 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 array
• You may have lost connection to the host via the
Host Interface Card. The Host Interface Card
LED on the back of the array 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 HIC
• Swap the cable from one HIC to the other HIC.
• If the LED is now green, swap the cable back to
the original HIC. If the LED is amber, the HIC is
defective.
• Swap the defective HIC (refer to
Operating Instructions on page 71
)
If you can’t access the 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 array 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
machine.
• 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.