IBM N series Hardware Manual page 147

Attention: At the time of this writing, Data ONTAP 8.1 has the following limitations:
The FibreBridge does not support mixing EXN3000 and EXN3500 in same stack.
FibreBridge configurations do not support SSD drives.
The FibreBridge does not support SNMP.
Table 9-1 Shelf combinations in a FibreBridge stack
Shelf
EXN3000 (SAS disks)
EXN3000 (SATA disks)
EXN3500 SAS disks
The FC-SAS00 FibreBridge product has the following specifications:
Two 8 Gbps FC ports (optical SFP+ modules included)
(4x) 6 Gbps SAS ports (only one SAS port used)
Dual 100/1000 RJ-45 Ethernet ports
Serial port (RS-232)
1U enclosure
Mountable into a standard 19-inch rack
Figure 9-2 shows the bridge ports.
Figure 9-2 FibreBridge ports on rear side
Restriction: Only the SAS port that is labeled A can be used to connect expansion
shelves because SAS port B is disabled.
An Ethernet port and a serial port are available for bridge management.
At a minimum, MetroCluster requires four FibreBridges, two per stack, with one stack on
either site. Therefore, two FibreBridges (one for redundancy) are required per stack of SAS
shelves. Current maximum is 10 SAS shelves per stack of SAS or SATA disks.
EXN3000 EXN3000
(SAS disks) (SATA disks)
Same Yes
Yes Same
No No
Chapter 9. MetroCluster expansion cabling
EXN3500
SAS disks
No
No
Same
127