Figure 1: PM8031 Tachyon QE8e+ Block Diagram 8 Lanes PCI-Express 2.5 / 5.0 Gbps Interface PCI-Express Core Tachyon Expressway Key Mgr Figure 1 Key Mgr Key Mgr Key Mgr Fibre Core 1 Fibre Core 2 Fibre Core 3 Fibre Core 4 Crypto Engine Crypto Engine Crypto Engine Crypto Engine 8/4/2 Gbps FC 8/4/2 Gbps FC 8/4/2 Gbps FC 8/4/2 Gbps FC PMC-Sierra Figure 2: Enabling Secure Storage in Fibre Channel and SAS Enterprise Storage Systems with Controller-Based Encryption FC SAN-Attached FC HDD Storage Systems 8G FC Controller Card 8G FC P Port 8G FC Controller Card FC 8G FC P Port Disk 12 RAID Processor Chipset RAID Processor Chipset FC Disk 6 FC Disk 3 8G FC E Port 8G FC E Port Encryption Domain FC SAN-Attached SAS/SATA HDD Storage Systems SATA Encryption Domain Disk 17 3G SAS Controller Card 3G SAS Controller Card 8G FC P Port 8G FC P Port RAID Processor Chipset Figure 2 RAID Processor Chipset SAS Disk 8 SAS Wide Port SATA Disk 0 SAS Wide Port PMC-Sierra Figure 3: Data at Rest Disk Encryption with Controller-Based Encryption Encryption enabled HBAs (Controller-Based Encryption ) Switch/Appliance Array Controller Array Controllers NAS Heads JBOD Controller-Based Encryption JBOD Figure 3 PMC-Sierra