Accusys ACS-8990 User Manual page 77

Appendix A – Troubleshooting
capacity function for single partition. If you get this problem, please confirm with the OS and
HBA vendor if they do support this function or contact with your vendor for the compatibility list.
.
Problems during operation
The front panel LCD displays alternating "Zz" characters.
Possible Cause: These characters are displayed when the cache is full with write request data
that have not been processed. Requests from the host are halted to flush the data in the cache.
Fix: None needed.
The front panel LCD displays alternating "Ww" characters.
Possible Cause: These characters are displayed to indicate that write requests in the cache are
being processed. When these characters are displayed, ACS-8990 will halt requests from the
host (see above).
Fix: Make sure the Write Buffer option of the RAID Params menu is enabled. In addition, more
cache memory may be required. By increasing the cache memory, the write buffer space
increases and will be able to handle the higher write requests.
LCD display shows OWOOOS
Possible Cause: "W" means "warning" - there are many bad sectors on your HDD.
Fix: Change hard drives.
Invalid NVRAM message appears
Possible Cause: NVRAM error or malfunction.
Fix: Save settings and restart the controller. If the problem persists, contact your vendor.
What is the correct system shutdown procedure?
Fix Step 1: Shut down host OS.
Fix Step 2: Select "Shut Down" from the NVRAM menu.
Fix Step 3: When shutdown is complete, turn off controller system power.
Remote terminal problems
Unable to access Configuration Mode using the remote terminal interface.
Possible Cause 1: The terminal communication settings do not match the settings of the
ACS-8990 RS-232 interface.
Fix: The default settings for the RS-232 port are 115,200 Baud rate, 8 Data bits, 1 Stop bit, No
Parity, and None Flow control. Make sure the terminal is configured for these settings. If the
settings were changed in Configuration Mode, verify the settings of the ACS-8990 in the
RS-232 Params, Terminal option and change the terminal settings accordingly.
Possible Cause 2: Incompatible RS232 cable.
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