Isolate Hardware And Connectivity Faults; Table 14 5U Enclosure Non-Fault Conditions - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

Table 14 5U enclosure non-fault conditions

Symptom
Operator's panel area LEDs, no fault conditions
System power, system ID, and host connectivity LEDs
with no module, logical, or drawer fault LEDs
Drawer panel LEDs, no fault conditions
Drawer power and sideplane OK LED
Drawer data activity bar
Drive module LEDs, no fault conditions
Amber flashing LED: 1 second on, 1 second off
Controller or expansion module LEDs, no fault conditions
LEDs other than:
-Controller or expansion module amber fault LEDs
-SAS port amber fault LEDs
FCM LEDs, no fault conditions
FCM OK amber LED flashing
PSU LEDs, no fault conditions
PSU OK amber LED flashing

Isolate hardware and connectivity faults

You may occasionally have to isolate a fault related to the storage enclosure hardware or related to data connections
associated with the storage enclosure. This is particularly true with data paths because of the number of components involved
along the data path and the complexity of the interactions. For example, if a host-side data error occurs, it could be caused by
any of the involved hardware components. It could be on the host side, such as a faulty host bus adapter (HBA) or switch. It
could be on the storage enclosure side, such as a faulty controller module (CM), cable, or connector. It also could be a failure
involving more than one of these components.
Use this section to gather common installation hardware fault information and isolate the fault.
CAUTION When you suspect a drive module or connection is the fault, halt all input and output operations to the disk
group or groups from all hosts as a data protection precaution. Make sure your regularly scheduled backup is good and that
you conduct another backup at the time of failure as an additional data protection precaution.
To isolate hardware and connectivity faults associated with the storage enclosure:
1. Make sure the storage enclosure reached a ready state after properly connecting the storage enclosure to the host system.
2. Complete the following actions to gather fault information:
a. Examine host application or operating system logs for fault identification.
b. Examine system logs from both controller modules for errors, such as log and status output for fault identification.
c. Use system alerts to help narrow the fault to an area of the storage enclosure.
d. Visually inspect the operator's panel LEDs. A hardware fault LED indicates there is a hardware issue and a logical fault
LED indicates there could be a drive or disk group issue.
e. Access the identified location, then look for an amber fault LED to help identify a faulty module.
f. If you cannot find a fault in any of the listed areas, the fault most likely lies outside the storage enclosure.
Cause
System functioning properly
System functioning properly
Drive unit identification (UID) bit is set
System likely functioning properly
PCM is in standby mode
PCM is in standby mode
Chapter 9 Hardware installation and configuration issues
Recommended Action
No action required.
No action required.
No action required.
Often, no action required. Refer to
"Interpret controller module LEDs" on
page 59.
No action required.
No action required.
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