Front-end modules

Virtual Storage Platform E1090 Hardware Reference Guide

Part Number

The front-end modules (FEMs), also called channel boards (CHBs), control the transfer of data between the host and cache memory. The storage system supports Fibre Channel (FC) and iSCSI front-end modules (FEMs) for attachment to host servers. The front-end module LEDs indicate the operating status of the module.

Table. Front-end module specifications
Specification Fibre 32-Gbps Ready iSCSI 10G iSCSI 10G BASE-T
Model number DKC-F910I-4HF32R DKC-F910I-2HS10S DKC-F910I-2HS10B
Number of PCBs 1 1 1
Host interface FCP iSCSI (optical) iSCSI (copper)
Data transfer rate (MB/s) 16Gbps: 400/800/1,600

32Gbps: 800/1,600/3,200

1,000 100/1,000
Number of options installed( ): DKB slot used 2/4/6/8/12/14/16 (14/16/18/20) 2/4/6/8/12/14/16 (14/16/18/20) 2/4/6/8/12/14/16 (14/16/18/20)
Number of ports per PCB 4 2 2
Number of ports per storage system( ): DKB slot used 8/16/24/32/48/56/64 (56/64/72/80) 4/8/12/16/24/28/32 (28/32/36/40) 4/8/12/16/24/28/32 (28/32/36/40)
Maximum cable length Short wave1 400m/190m/125m/100m 550m -
Long wave 10km - -
Copper - - 50m (cat 6a)
  1. When 50/125mm laser optimized multi-mode fibre cable (OM3 or OM4) is used. When using other cable types, contact customer support.