The LaCie 12big Rack Serial 2 includes an Enclosure Services Processor and associated monitoring and control logic to enable it to diagnose problems within the enclosure’s power, cooling and drive systems.
The sensors for power and cooling conditions are housed within the PCMs. There is independent monitoring for each module.
First check that you have wired up the enclosure system correctly. Then, if:
Call your supplier for replacements.
Please refer to Troubleshooting.
Green LEDs are always used for good or positive indication, flashing Green/Amber if non-critical conditions exist. Red or Amber LEDs indicate there is a critical fault present within the module.
Under Normal conditions the bi-color Power On LEDs (Figure 4–1) will be illuminated constant GREEN. When a fault occurs the Power On LEDs will be illuminated constant RED.
Table 5–1: PCM LED States
|PCM OK (Green)||Fan Fail (Amber)||AC Fail (Amber)||DC Fail (Amber)||Status|
|OFF||OFF||OFF||OFF||No AC (any PCM)|
|OFF||OFF||ON||ON||No AC (this PCM only)|
|ON||OFF||ON||ON||AC present PCM On OK|
|OFF||ON||OFF||OFF||PCM Fan Fail|
|OFF||ON||ON||ON||PCM fault (over amp, over voltage, over current)|
|OFF||FLASHING||FLASHING||FLASHING||PCM firmware download|
The Ops Panel (Figure 4–2) displays the aggregated status of all the modules. The Ops Panel LEDs are defined in Table 5–2.
Table 5–2: Ops Panel LED States
| System Power |
| Module Fault |
| Logical Fault |
|LED Display||Associated LEDs/Alarms||Status|
|ON||OFF||OFF||X||Aux present, overall power failed or switched off|
|ON||ON||X||X||Single beep, then double beep||Ops Panel Power On (5s), test state|
|ON||OFF||OFF||X||Power On, all functions good|
|ON||ON||X||X||PCM Fault LEDs, Fan Fault LEDs||Any PCM fault, Fan fault, over or under temp.|
|ON||ON||X||X||SBB Module LEDs||Any SBB Module fault|
|ON||ON||X||X||Enclosure logical fault|
|ON||Flash||X||X||Module state LED on SBB module||Unknown (invalid or mixed) SBB module type installed, DC bus failure (inter SBB comms) LaCie 12big Rack Serial 2 VPD configuration error|
|ON||Flash||X||X||PCM Fault LEDs, Fan Fault LEDs||Unknown (invalid or mixed) PCM type installed or DC bus failure (PCM comms)|
|ON||X||ON||X||Array in failed or degraded state||drive failure has occurred causing loss of availability or redundancy|
|ON||X||Flash||X||Array in impacted state||Arrays operating background function|
|ON||Flash||Flash||X||SES state S!||Enclosure ID setting different from Start of Day|
|X||X||X||Flash||SES controlled Enclosure ID or Invalid ID selected|
KEY: X = Disregard.
Disk drive status is monitored by a GREEN LED and an AMBER LED mounted on the front of each Drive Carrier Module, shown in Figure 5–1 and Figure 5–2. The LED conditions are defined in Table 5–3.
Table 5–3: Drive LED States
|Green Drive LED||Amber Drive LED||Associated Ops Panel LED||Status|
|OFF||OFF||None||No drive installed|
|On/Blink/Off with activity or start up||X||None||Drive installed and operational|
|ON||Flash 1s On/1s Off||None||SES device identity set|
|ON||ON||Logical Fault (Amber)||SES device fault bit set|
|OFF||ON||Module Fault (Amber)||Power control circuit failure|
|ON||Flash 3s On/1s Off||Logical Fault (Amber)||Failed disk array|
KEY: X = Disregard.
I/O Module faults are indicated by the Amber Fault LED on the module faceplate. VPD errors are indicated by the Module OK LED flashing Green. Host port connections are monitored by Green Activity LEDs. LED states are shown in Table 5–4.
Table 5–4: I/O Module LED States
|I/O Module OK (Green)||I/O Module Fault (Amber)||Host Port Activity (Green)||Status|
|ON||OFF||X||I/O Module OK|
|OFF||ON||X||I/O Module Fault|
|X||X||OFF||No Host Port Connection|
|X||X||ON||Host Port Connection - No Activity|
|X||X||Flashing||Host Port Connection - Activity|
|Flashing||X||X||I/O Module VPD Error|
KEY: X = Disregard.
An Audible Alarm is located on the Ops Panel and is activated by the LaCie 12big Rack Serial 2 firmware for a variety of situations.
Table 5–5: Alarm States
|Alarm State||Action||Action with Mute Button Pressed|
|S0||Normal Mode: Silent||Bleep twice|
|S1||Fault Mode: 1s on/1s off||Transition to S2 or S3, (see Notes)|
|S2||Remind Mode: Intermittent Bleep||None|
|S3||Muted Mode: Silent||None|
|S4||Critical Fault Mode: Continuous Alarm||None: Mute not active|
The Audible Alarm can be muted by pressing the Mute button on the Ops Panel.
Please refer to troubleshooting for more information.
The following sections describe common problems, with possible solutions, which can occur with your LaCie 12big Rack Serial 2.
For details on how to remove and replace a module see Module Removal and Replacement.
Table 5–6: Alarm Conditions
|Status||Severity||Alarm||Ops Panel LED|
|PCM Alert – Loss of DC power from a single PCM||Fault – No Loss of Redundancy||S1||Module Fault|
|PCM Alert – Loss of DC power from a single PCM||Fault – Loss of Redundancy||S1||Module Fault|
|PCM Fan Fail||Fault – Loss of Redundancy||S1||Module Fault|
|SBB Module detected PCM Fault||Fault||S1||Module Fault|
|PCM Removed||Configuration Error||None||Module Fault|
|Enclosure Configuration Error (VPD)||Fault – Critical||S1||Module Fault|
|Low Warning Temperature Alert||Warning||S1||Module Fault|
|High Warning Temperature Alert||Warning||S1||Module Fault|
|Over Temperature Alarm||Fault – Critical||S4||Module Fault|
|I2C Bus failure||Fault – Loss of Redundancy||S1||Module Fault|
|Ops Panel Communication Error (I2C)||Critical Fault||S1||Module Fault|
|Raid Error||Fault – Critical||S1||Module Fault|
|SBB Interface Module Fault||Fault – Critical||S1||Module Fault|
|SBB Interface Module Fault – No functioning modules remaining||Fault – Critical||S4||Module Fault|
|SBB Interface Module Removed||Warning||None||Module Fault|
|Drive Power Control Fault||Warning – No loss of drive power||S1||Module Fault|
|Drive Power Control Fault||Fault – Critical – loss of drive power||S1||Module Fault|
|Drive Removed||Warning||None||Insufficient Power Available|
|Audible alarm sound||Internal fault detected (e.g. failure of an internal communications path)||Check for other AMBER LED indications on the PCMs. If there is a PCM error present there may be a communications problem with that PCM. Remove and then re-fit the PCM, if the problem persists then change the PCM.|
| 1 Ops Panel Module Fault LED amber |
2 Audible alarm sounding.
3 Fan Fail LED is illuminated on PCM
| 1 Any power fault. |
2 A thermal condition which could cause PCM overheating.
3 A fan failure.
| 1 Check AC mains connections to PCM is live.
2 Disconnect the PCM from mains power and remove the PCM. Re-install: if problem persists, replace PCM.
3 Reduce the ambient temperature.
The LaCie 12big Rack Serial 2 uses extensive thermal monitoring and takes a number of actions to ensure component temperatures are kept low and also to minimize acoustic noise. Air flow is from front to rear of the enclosure.
| If the ambient air is below 25 °C and the fans are observed to increase in speed then some restriction on airflow may be causing additional internal temperature rise. |
Note: This is not a fault condition.
| The first stage in the thermal control process is for the fans to automatically increase in speed when a thermal threshold is reached. This may be caused by higher ambient temperatures in the local environment and may be perfectly normal. |
Note: This threshold changes according to the number of drives and power supplies fitted.
| 1 Check the installation for any airflow restrictions at either the front or rear of the enclosure. A minimum gap of 25mm at the front and 50mm at the rear is recommended.
2 Check for restrictions due to dust build-up; clean as appropriate.
3 Check for excessive re-circulation of heated air from rear to the front, use in a fully enclosed rack installation is not recommended.
4 Check that all blank modules are in place.
5 Reduce the ambient temperature.
| 1 Ops Panel Module Fault LED amber. |
2 An amber LED on one or more PCMs.
|If the internal temperature measured in the airflow through the enclosure exceeds a pre-set threshold a thermal alarm will sound.|| 1 Check local ambient environment temperature is below the upper 35°C specification.
2 Check the installation for any airflow restrictions at either the front or rear of the enclosure. A minimum gap of 25mm at the front and 50mm at the rear is recommended.
3 Check for restrictions due to dust build-up, clean as appropriate.
4 Check for excessive re-circulation of heated air from rear to the front, use in a fully enclosed rack installation is not recommended.
5 If possible shutdown the enclosure and investigate the problem before continuing.
If a PCM is being firmware programmed and the download fails then the PCM fans will go to full speed and the PCM LEDs will flash as follows:
Ensure that you have obtained a replacement module of the same type before removing any faulty module.
Your hardware or management software Enclosure Management application will determine the capability of replacing a failed disk without loss of access to any filles system on the enclosure. Enclosure access and use during this period is uninterrupted.
If an enclosure contains two or more PCMs, they can maintain power to the system while a faulty PCM is replaced.