Operational error messages

When operational error messages appear

These error messages might appear on the system console or LCD when the system is operating, when it is halted, or when it is restarting because of system problems.

General error messages

The following table describes other error messages that might appear on the LCD if your storage engine encounters errors while starting up or during operation.

Error message	Explanation	Fatal?	Corrective action
Disk n is broken	n--The RAID group disk number. The solution depends on whether you have a hot spare in the system.	No	See the System Administration Guide for information about how to locate a disk based on the RAID group disk number and how to replace a faulty disk.
Fans stopped; replace them	One of the fan subassemblies of your storage engine failed.	No	Replace the failed fan subassembly as soon as possible.
Power supply degraded	One of the power supply units is turned off, was removed from your storage engine, or failed.	No	Verify that both power supplies are installed and turned on. If you still get this error, replace the power supplies one at a time to determine the failed power supply.
Dumping core	The system is dumping core after a system crash.	Yes	Write down the system crash message on the system console and report the problem to Network Appliance Customer Support.
Disk hung during swap	A disk error occurred as you were hot swapping a disk.	Yes	Disconnect the disk from the power supply by opening the latch and pulling it half-way out. Wait 15 seconds to allow all disks to spin down. Reinstall the disk. Restart the system by entering the following command: boot
Error dumping core	The system cannot dump core during a system crash and restarts without dumping core.	Yes	Report the problem to Network Appliance Customer Support.
Panicking	The system is crashing. If the system does not hang while crashing, the message `Dumping core` appears.	Yes	Report the problem to Network Appliance Customer Support.
System too hot	The temperature sensor indicates that the system temperature is too high.	Yes	Verify that the ventilation holes on the top cover of the system are not blocked. If the ventilation holes are not blocked and the problem persists, contact Network Appliance Customer Support for help.

AT-FC error messages

The following table describes other error messages that might appear on the console if your storage engine encounters AT-FC module errors while starting up or during operation. The output displayed on the console is similar to the following example.

Example

Wed Aug  6 19:31:40 PDT [scsi.cmd.notReadyCondition:notice]: Device 
11b.44: Device returns not yet ready: CDB 0x41:026d0880:5000: Sense 
Data SCSI:not ready -  (0x2 - 0x4 0x7 0x0)(28615).

Sense key	ASC	ASCQ	Description on console	Corrective action
00h	00h	00h	No sense	No action.
01h	5Dh	20h	Recovered error, controller impending error, general hard drive failure, SMART notification.	Notification was sent out and follow-on log messages identify and clarify corrective action.
02h	04h	00h	Not ready, cause not reportable (drive failed to spin-up and become ready).	No action.
02h	04h	01h	Not ready, logical unit is in the process of becoming ready (drive spinning up).	No action.
02h	04h	03h	Logical unit not ready, manual intervention required (drive failed to become ready after error recovery or drive not installed).	Replace or install a disk drive in the identified location, as described in Replacing a disk in a disk shelf.
02h	04h	07h	Logical unit not ready, command in progress (drive command timeout).	No action.
03h	11h	00h	Media error, unrecoverable read error (ATA UNC).
03h	12h	00h	Media error, address mark not found for ID (ATA AMNF, drive vendor unique)
03h	14h	01h	Medium error, record not found. (ATA IDNF)
03h	15h	01h	Medium error, mechanical positioning error (ATA TRK0 NF, drive vendor unique).	No action.
04h	44h	00h	Hardware error, internal target failure (ATA FW PROB, drive vendor unique or unrecognized ATA error).
05h	20h	00h	Illegal request, invalid command Op Code.
05h	21h	00h	Illegal request, logical block address out of range.
05h	24h	00h	Illegal request, invalid field in CDB.
05h	26h	00h	Illegal request, invalid field in parameter list.
06h	29h	00h	Unit attention, reset or target reset occurred.
06h	29h	01h	Unit attention, power-on occurred.
06h	3Fh	03h	Unit attention, inquiry data changed.
0Bh	08h	03h	Hardware error, logical unit communication error (ATA ICRC).	Check the connections to ensure that they are secure and tight. If the error persists, change the cables.
0Bh	44h	00h	Aborted command, internal target failure (ATA ABRT).	No action.

Additional AT-FC error messages

The following error messages appear on the storage appliance console if an SES element on the AT-FC module fails. See Replacing the AT-FC module for more information. The output displayed on the console is similar to the following example.

Example

Mon Aug 25 21:34:05 GMT [ses.status.temperatureWarning:warning]: 
DS14-Mk2-AT shelf 3 on channel 5a temperature warning for 
Temperature sensor 1: non-critical status; undertemperature 
warning. Current temperature: 1 C (33 F). This module is on the 
front side of the shelf, at the right, on the OPS panel.

Error message	Corrective action
Temperature sensor 2: failed	Contact Network Appliance Customer Support.
Temperature sensor 3: failed	Contact Network Appliance Customer Support.
SES electronics Element 1: component is from a different product family	This configuration is unsupported. Contact Network Appliance Customer Support.
SES electronics Element 1: failed	Contact Network Appliance Customer Support.
SES electronics Element 2: failed	The AT-FC module on the disk shelf failed. Replace the AT-FC module, as described in Replacing the AT-FC module.
Temperature sensor 2: not installed or failed	Contact Network Appliance Customer Support.
Environmental sensor 3: not installed or failed	Contact Network Appliance Customer Support.
SES electronics Element 1: not installed or failed
Vendor-specific Element 1: not installed or failed
SES electronics Element 2: not installed or failed	Communication with the temperature sensor on the AT-FC module failed. Replace the AT-FC module, as described in Replacing the AT-FC module.
Vendor-specific Element 2: not installed or failed

Disk shelf error messages

The following table lists the disk shelf error messages from the front panel and the power supplies, that might be displayed on the console if you encounter disk shelf errors during start or operation.

Error message	Corrective action
Front panel messages
Temperature sensor 1: failed	The temperature sensor on the front operation panel failed. Replace the disk shelf, as described in Replacing a disk shelf in a rack.
Alarm Element 1: failed	The alarm on the front operation panel failed. Replace the disk shelf, as described in Replacing a disk shelf in a rack.
Display Element 1: failed	The display element on the front operation panel failed. Replace the disk shelves, as described in Replacing a disk shelf in a rack.
Power supply messages
Power supply 1: failed	The power supply on the left back of the disk shelf failed. Replace the power supply, as described in Replacing a power supply in a disk shelf.
Power supply 2: failed	The power supply on the right back of the disk shelf failed. Replace the power supply, as described in Replacing a power supply in a disk shelf.
Cooling element Element 1: failed	The fan module on the left back power supply failed. Replace the power supply, as described in Replacing a power supply in a disk shelf.
Cooling element Element 2: failed	The fan module on the right back power supply failed. Replace the power supply, as described in Replacing a power supply in a disk shelf.