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 | Fibre 32-Gbps Ready | iSCSI 25G | iSCSI 10G | iSCSI 10G BASE-T | |
|---|---|---|---|---|---|
| Model number | DKC-F910I-4HF32R | DKC-F910I-2HE25R | DKC-F910I-2HS10S | DKC-F910I-2HS10B | |
| Number of PCBs | 1 | 1 | 1 | 1 | |
| Host interface | FCP | iSCSI (optical) | iSCSI (optical) | iSCSI (copper) | |
| Data transfer rate (MB/s) | 16 Gbps: 400/800/1,600 32 Gbps: 800/1,600/3,200 |
1,000/2,500 | 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 (10/12/14/16) | 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 | 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 (20/24/28/32) | 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 | 400 m/190 m/125 m/100 m | 400 m/100 m | 550 m | - |
| Long wave | 10 km | - | - | - | |
| Copper | - | - | - | 50 m (cat 6a) | |
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