Grass Valley K2 Summit Client Service Manual Nov.23 2009 - Manual (Page 31)

12 October 2009 K2 Summit Production Client Service Manual 31
FRU functional descriptions
FRU functional descriptions
The Field Replaceable Units (FRUs) described in this section are as follows:
• “Front bezel assembly”
• “Disk modules”
• “CompactFlash boot media”
• “Power supply modules”
• “Codec module”
• “MPEG-2 encoder card”
• “AVC-Intra codec card”
• “Disk controller board”
• “Front interconnect board”
• “Disk backplane unit”
• “Midplane board”
• “Carrier module”
• “Fibre Channel board (optional)”
For procedures, refer to Chapter 5, Removing and replacing FRUs.
Front bezel assembly
The front bezel assembly includes the bezel, standby switch, service LED, power
LED, USB connection, and fans. The assembly has four fans and provides cooling for
the K2 Summit Client chassis. Air intake is from the front of the K2 Summit Client
and outflow is through the rear. The assembly connects to the front interconnect board
and is secured to the chassis by two thumbscrews.
Refer to “Front bezel assembly removal” on page 92 for procedures.
Disk modules
There are 8 slots for disk modules in the K2 Summit Client. The slots are located
behind the front bezel assembly in the front of the chassis. Each slot can contain one
disk module, and each module contains one hard drive. Depending on storage options,
a K2 Summit Client can contain 0, 4, or 8 disk modules. Disk modules plug into the
disk backplane board.
Data is written or “striped” across the disks in a continuous fashion, which makes the
disks a “stripe group”. This stripe group appears as the V: drive to the Windows
operating system.
The V: drive stores media. It also stores media file system, database, and
configuration information. K2 Summit Clients with direct-connect storage or shared
SAN storage do not contain disk modules, as the V: drive is on the external RAID
storage devices.