HP StorageWorks 4000/6000/8000 .HP StorageWorks SAN Design Reference Guide, Pa - Page 53

FC attached HP storage FC attached HP storage B-series CN switch Converged 10 GbE CNA connections FC connections Fabric B FC connections B-series CN switch Fabric A B-series FCoE blade 10 GbE IP network B-series FCoE blade Converged 10 GbE CNA connections Server Server with CNA with CNA Server with CNA Server with CNA 26643a Figure 11 Converged SAN fabric with an FCoE blade . The convergence of Ethernet and Fibre Channel with FCoE provides the same level of connectivity as previous technologies, but requires the following: • 50% fewer switches in each server rack-Only two FCoE ToR switches, compared with four (two network and two Fibre Channel) switches per rack • 50% fewer adapters per server • 75% fewer cable connections • Less power consumption For more information about FCoE switches, see: • "B-series switches and fabric rules" on page 93 • "C-series Fibre Channel and FCoE switches and fabric rules" on page 135 For more information about configuring FCoE SANs, see the HP StorageWorks Fibre Channel Over Ethernet Application Note, available at http://www.hp.com/go/sdgmanuals. Data availability SAN data availability depends on the reliability of the SAN fabric, servers, and storage systems during routine operations. The data availability level required for your SAN environment is based on: • Administrative requirements (for example, backup schedules, operating procedures, and staffing) • Protection level for applications or data SAN Design Reference Guide 53