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140 QXS G2 Hardware Installation and Maintenance Guide

If there is activity, halt all applications that access the storage system.

3 Check the Cache Status LED to verify that the controller cached data is flushed to the drives.

• Solid – Cache contains data yet to be written to the disk.

• Blinking – Cache data is being written to CompactFlash.

• Flashing at 1/10 second on and 9/10 second off – Cache is being refreshed by the super

capacitor.

• Off – Cache is clean (no unwritten data).

4 Remove the SFP and host cable and inspect for damage.

5 Reseat the SFP and host cable.

Is the host link status/link activity LED on?

• Yes – Monitor the status to ensure that there is no intermittent error present. If the fault occurs

again, clean the connections to ensure that a dirty connector is not interfering with the data

path.

• No – Proceed to the next step.

6 Move the SFP and host cable to a port with a known good link status.

This step isolates the problem to the external data path (SFP, host cable and host-side devices) or

to the controller module port.

Is the host link status/link activity LED on?

• Yes – You now know that the SFP, host cable, and host-side devices are functioning properly.

Return the cable to the original port. If the link status LED remains off, you have isolated the

fault to the controller module’s port. Replace the controller module.

• No – Proceed to the next step.

7 Swap the SFP with the known good one.

Is the host link status/link activity LED on?

• Yes – You have isolated the fault to the SFP. Replace the SFP.

• No – Proceed to the next step.

8 Re-insert the original SFP and swap the cable with a known good one.

Is the host link status/link activity LED on?

• Yes – You have isolated the fault to the cable. Replace the cable.

• No – Proceed to the next step.

9 Verify that the switch, if any, is operating properly. If possible, test with another port.

10 Verify that the HBA is fully seated, and that the PCI slot is powered on and operational.

11 Replace the HBA with a known good HBA, or move the host side cable and SFP to a known good

HBA.

Is the host link status/link activity LED on?

• Yes – You have isolated the fault to the HBA. Replace the HBA.

• No – It is likely that the controller module needs to be replaced.

12 Move the cable and SFP back to its original port.

Is the host link status/link activity LED on?

Quantum QXS G2 Series User Manual

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