Technical Advisory 1023

Product

Product code

MM#

Intel

RAID Controller RS25FB044 RS25FB044 921700

Description

Intel has discovered a potential data loss when using a RAID controller or module listed above with firmware version

ph13.5_2012.06.22 that has shipped on the products listed above. This issue has a very low occurrence rate and can

only be seen when the column 0 drive in a volume is removed and a reset is conducted which will cause the start of day

code to execute.

Root Cause

The root cause for this issue has been identified and corrected. The constructor for a Raid controller/module volume

assigns the volume block size based on the size of the drive in the first column (column 0) of the volume. If the column

0 drive is physically removed and a RAID controller/module reset is conducted, the RAID controller/module firmware

initialization process will run the “start of day” code and when no drive is found in column one, the block size will be

initialized to 0. The length of all I/Os generated by Intel

RAID controller/module will be 0. The Protocol Layer in the

RAID Controller/Module firmware will then return success status without accessing the physical drive and the Intel

RAID Controller/Module will pass on the success status, however, no data transfer occurs. This action results in data

remaining on the raid volume being inaccessible.

Corrective Action / Resolution

This issue is fixed in Intel

RAID controller/module firmware version ph13.5upd_13.00.66.00_2012.10.09. Please

upgrade your affected products’ firmware to version ph13.5upd_13.00.66.00_2012.10.09 or later. The latest RAID

firmware with the fix is available on the Intel web site at (http://downloadcenter.intel.com/default.aspx

), and will

be included on all above products manufactured after October 15

Please contact your Intel Sales Representative if you require more specific information about this issue.

Enterprise Platforms & Services Division

Intel Corporation