Front-End Modules - Hitachi VSP E990 Hardware Reference Manual

Front-end modules

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.
Specification
Model number
Number of PCBs
Host interface
Data transfer rate (MB/s)
Number of options
installed( ): DKB slot used
Number of ports per PCB
Number of ports per
storage system( ): DKB slot
used
Maximum Short
1
cable length wave
Long wave
Copper
1. When 50/125mm laser optimized multi-mode fibre cable (OM3 or OM4) is used. When using other
cable types, contact customer support.
Hitachi Virtual Storage Platform E990 Hardware Reference Guide
Fibre 32-Gbps Ready
DW-F800-4HF32R
1
FCP
16Gbps:
400/800/1,600
32Gbps:
800/1,600/3,200
2/4/6/8/12/14/16
(14/16/18/20)
4
8/16/24/32/48/56/64
(56/64/72/80)
400m/190m/125m/
100m
10km
-
Chapter 2: Hardware overview
iSCSI 10G
DW-F800-2HS10S
1
iSCSI (optical)
1,000
2/4/6/8/12/14/16
(14/16/18/20)
2
4/8/12/16/24/28/32
(28/32/36/40)
550m
-
-
Front-end modules
iSCSI 10G BASE-T
DW-F800-2HS10B
1
iSCSI (copper)
100/1,000
2/4/6/8/12/14/16
(14/16/18/20)
2
4/8/12/16/24/28/32
(28/32/36/40)
-
-
50m (cat 6a)
18