3Ware 8506-4LP User Guide - Page 113
Aen 024h, Aen_sbuf_fail, Aen_lost_cached_write, Aen_drive_ecc_error, Aen_dcb_xsum_error
UPC - 693494850642
View all 3Ware 8506-4LP manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 113 highlights
Screen display messages AEN 024h AEN_SBUF_FAIL The ATA RAID controller, as part of its data integrity features, performs diagnostics on its internal RAM devices. Once a day, a non-destructive test is performed on the cache memory. Failure of the test indicates a failure of a hardware component on the ATA RAID controller. This AEN is sent to notify the user of the problem. AEN 025h AEN_LOST_CACHED_WRITE To improve performance, this ATA RAID controller features caching layer firmware. For write commands this means that it acknowledges it has completed a write operation before the data is committed to disk. If the ATA RAID controller can not commit the data to the media after it has acknowledged to the host, this AEN is posted to the user. Typically, the LOST CACHED WRITE notification would be an indication of a catastrophic failure of the drives in the array, such as loss of power to multiple drives in an array. AEN 026h AEN_DRIVE_ECC_ERROR This AEN may be sent when a drive returns the ECC error response to a ATA RAID controller command. The AEN may or may not be associated with a host command. Internal operations such as Background Media Scan post this AEN whenever drive ECC errors are detected. Drive ECC errors are an indication of a problem with grown defects on a particular drive. For redundant arrays, this typically means that dynamic sector repair would be invoked (see AEN 023h). For non-redundant arrays (JBOD, RAID 0 and degraded arrays), drive ECC errors result in the ATA RAID controller returning failed status to the associated host command. AEN 027h AEN_DCB_XSUM_ERROR The ATA RAID controller stores certain configuration parameters on a reserved area of each disk drive called the Drive Configuration Block (DCB). As part of power-on initialization, the ATA RAID controller performs a checksum of the DCB area to ensure consistency. If an error occurs, please contact 3ware technical support. The drive's DCB has been corrupted. AEN 028h AEN_DCB_BAD_VERSION During the evolution of the Escalade product line, the format of the DCB has been changed to accommodate new features. The DCB format expected by the ATA RAID controller and the DCB that is written on the drive must be compatible. If an array that was created on a very old Escalade product is connected to a newer Escalade ATA RAID controller, this AEN is posted and the ATA RAID controller rejects the drive. Please contact 3ware technical support if this event occurs. www.3ware.com 105