Troubleshooting276 3ware SAS/SATA RAID Software User Guide, Version 9.5.10026 Drive ECC error reportedEvent TypeErrorCauseDrive ECC errors are an indication of grown defects on a particular drive. Forredundant units, this typically means that dynamic sector repair has beeninvoked (see message “0023 Sector repair completed” on page 274). For non-redundant units (Single Disk, RAID 0 and degraded units), which do not haveanother copy of the data, drive ECC errors result in the 3ware RAIDcontroller returning failed status to the associated host command.ActionSchedule periodic verifications of all units so that drive ECC errors can befound and corrected. If the unit is non-redundant a unit file system check isrecommended.Under Windows, right-click on your drive icon and choose Properties>Tools> Check Now.Under Linux or FreeBSD use fsck /dev/sda1. If you have more than oneSATA device, substitute the correct drive letter and partition number, such assdb2, for sda1.See Also“Enabling or Disabling Auto Verify for a Unit” on page 120“Scheduling Background Tasks” on page 1730027 DCB checksum error detectedEvent TypeErrorCauseThe drive’s Drive Configuration Block (DCB) has been corrupted.The 3ware RAID controller stores certain configuration parameters on areserved area of each disk drive called the Drive Configuration Block. As partof power-on initialization, the 3ware RAID controller performs a checksum ofthe DCB area to ensure consistency.
