321 Studios GHDX2-2430S-24F4D User Manual

 

Introduction  

1-1  

  

 

 

 
 
 
 
 
 

This hardware manual briefly introduces the Galaxy GHDX2-2430S/R-16F4D Fibre-4G 

to SATA-II RAID subsystem as shown in Figure 1-1. 

 

The GHDX2-2430S-24F4D RAID subsystem is powered by a single RAID controller, 

the GHDX2-2430R-24F4D by dual redundant RAID controllers. Each RAID controller 

comes with two (2) 4Gbps Fibre host channels that are interfaced through four (4) 

separate SFP ports. A total of eight (8) SFP ports are available in a redundant-controller 

configuration. The additional SFP ports facilitate connection to multiple application 

servers and for connecting fault-tolerant data paths. The subsystem houses twenty-four 

(24) 3Gbps SATA-II disk drives each with dedicated channel bandwidth. Each controller 

board comes with a pre-installed 512MB DDR RAM DIMM module and can support 

memory modules with the capacities up to 2GB. 

The Galaxy HDX2 series is built around a custom ASIC400 specifically designed with 

the hardware RAID6 capability. RAID6 can sustain two member drives of a RAID array 

to fail at the same time and thereby helps achieve a higher level of data availability. 

There are six (6) dedicated RCC paths strung between the partner RAID controllers in a 

dual-active configuration. The RCC chips reside on the third, separate PCI-X bus. This 

design takes benefits of the abundant system bandwidth brought by the new architecture 

and hence the inter-controller communications do not affect drive channel throughput.