Adaptec FS4500 User Guide - Page 51

SATA Storage Enclosures (FS4100 and FS4500) Dual SATA Configurations A dual Storage Enclosure has two FS4100 or two FS4500 I/O modules, and can be connected to one, two, three, or four hosts. Note: You cannot include Adaptec FS4100 and Adaptec FS4500 I/O modules together in the same Storage Enclosure. Dual SATA configurations provide a redundant controller and make better use of the available FC front-end bandwidth. The redundant controller provides data access to more hosts and adds the security of a second controller for data access. Table 5-2 summarizes the supported single and dual SATA configurations. (For example, a single SATA configuration can include one FS4100 or one FS4500.) Table 5-2 SATA Configurations Single SATA Configuration Dual SATA Configuration Adaptec FS4100 1 2 Adaptec FS4500 1 2 Flexibility and Limitations ■ The FS4500 RAID single controller configuration can be upgraded to dual controllers. ■ The FS4100 JBOD single I/O processor configuration can be upgraded to dual processors. ■ All SATA systems with an FC interface at the front end require SFP transducers, either copper or optical. (Copper cables with SFPs built into them are available.) ■ Dual SATA RAID and JBOD configurations require drive carriers with MUX cards installed. ■ The FS4050 single SATA JBOD configuration does not require drive carriers with MUX cards installed. 5-4