Grass Valley K2 Storage System Instruction Manual v.3.2 Aug.01 2007 - Manual (Page 292)

292 K2 Storage System Instruction Manual July 3, 2007
Chapter 7 Description of K2 Storage Devices
K2 Level 3 RAID storage description
The K2 Level 3 RAID Storage is used in Level 3 and Level 3R K2 Storage Systems.
The RAID storage device is a high performance, high availability mass storage
system. The L3 RAID chassis 2Gb/s host interface supports industry standard Fibre
Channel technology.
Four FC host ports are available, so that the L3 RAID chassis can be connected
directly to up to four media servers without Fibre Channel switches. The L3 RAID
chassis utilizes dual FC-AL technology, allowing four loop configurations within a
single chassis. Port-BypassCircuits have been added to maintain loop integrity during
failures without user intervention. Each loop and associated Port Bypass Circuits
along with all other active components are on redundant, separate hot swappable
modules. With two RAID Controllers, the two loops within a single standard chassis
are configured as a single loop with a backup loop in standby mode.
High-performance RAID processors that enable inter-controller communication at
2GB/s are installed to implement the shared memory system. This feature not only
enhances the performance, but also helps dynamic load balancing of the host
interfaces.
L3 RAID
Chassis
L3 RAID
Expansion
Chassis