Grass Valley K2 Level 2 RAID Oct.10 2006 - Manual (Page 18)

18 Level 2 RAID Instruction Manual September 8, 2006
Chapter 1 About the K2 Level 2 RAID storage
The K2 Level 2 utilizes dual FC-AL technology, allowing two loop configurations
within a single chassis. Loop integrity is maintained during failures without user
intervention. Each loop and associated circuits along with all other active components
are on redundant, separate hot swappable modules. This improves serviceability and
increases fault tolerance by eliminating any single point of failure.
K2 Level 2 RAID features
The K2 Level 2 RAID controllers provide enhanced performance of up to 2 Gb/s
transfer rates using SCSI protocol. Optical cables connect to hosts, such as to a K2
Media Server or to a Fibre Channel switch.
The Level 2 RAID supports one K2 Level 2 RAID Expansion Chassis. It does not
support connection to PFC 500E, PFR 500E, or PFR 600E RAID Expansion Chassis.
Copper cables connect a K2 Level 2 RAID to the K2 Level 2 RAID Expansion
Chassis.
Capacity and redundancy
The level 2 RAID contains five, ten, or fifteen half-height 3.5" Fibre Channel
Arbitrated Loop (FC-AL) disk drives. The chassis also supports one or two hardware
RAID controllers in one 3U high rack-mountable chassis. The K2 Level 2 RAID
currently uses 73GB, 146GB or 300GB drive capacities. With 15 drives, one chassis
holds up to 876GB, 1.7TB, or 3.6TB depending on the disk drive option.
The K2 Level 2 Expansion Chassis provides additional storage capacity. One K2
Level 2 Expansion Chassis can be connected to a single K2 RAID Storage Chassis
comprising a single disk-array storage system with a total of 30 drives and
approximately 1.7TB, 3.4TB, 7.2TB of storage depending on the disk drive option.
This provides for cost effective storage expansion as requirements grow.
K2 Level 2 RAID components
The K2 Level 2 RAID components are:
• The chassis with passive midplane board
• One or two RAID controllers (K2 Level 2R) or two expansion adapters
• As many as fifteen Fibre Channel disk drives per chassis
• Two RAID chassis power supplies (K2 Level 2 RAID) or expansion chassis power
supplies
• One LAN card
Any unoccupied slot (RAID controller, disk module, or LAN card) has a filler module
to maintain air flow and compliance with electromagnetic interference (EMI)
standards.
The RAID controllers, expansion adapters, disk drives, power supplies, and the LAN
card are hot-swappable field replaceable units (FRUs), which means you can add or
replace them while the K2 Level 2 RAID is powered up.
IMPORTANT: You must not hot swap operational RAID controllers or disk drives
without first disabling the target component using the Grass Valley Storage Utility.