Hello Okabe-san,
Please find below comments to your 3 items...
1. FEC Capabilities
Please see DCM v18.10.00 Release Notes, New Features. 10GE - FEC is now supported from this release. Find release note Link below (see pg. 17):
http://www.cisco.com/c/dam/en/us/td/docs/video/headend/DCM/RN/Release_Notes_DCM_V18-10-00.pdf
2. Installation Record
Sorry but for Installation Record, please contact your Cisco account representative for such information.
3. MTBF value of Media Interface Card
Sorry but for MTBF information, please contact your Cisco account representative for such information.
Hope that helps.
Vincent