Dell PS6000 Configuration Guide - Page 9

2.3 Controllers Since the EqualLogic PS Series was introduced, there have been several different array models released with new features, better performance and greater storage capacity. The storage array controllers were improved to take advantage of advances in the underlying networking and storage technologies. 2.3.1 Controller Types Array controllers can be identified and differentiated by the controller "type" designation. Each controller type will have a different colored label to help quickly identify the controller type. Table 3 lists each Dell EqualLogic controller along with some characteristics about each. Controller Type Type 1 Type 2 Type 3 SAS Type 3 SATA Type 4 Type 5 Type 6 Type 7 Type 8 Faceplate Network Interfaces 3 x 1GbaseT 3 x 1Gb SFP (combo) 3 x 1GbaseT 3 x 1Gb SFP (combo) 3 x 1GbaseT 3 x 1GbaseT 3 x 1GbaseT 3 x 1GbaseT 4 x 1GbaseT 2 x1GbaseT 1 x 10/100Mb mgt Storage Type Notes SATA SATA  Original Controller Design  PS50 - PS2400  1GB Cache  PS50 - PS2400  1GB Cache SAS SATA SAS SATA SATA SAS SATA SSD SAS SATA  PS3000 - PS5000  1GB Cache  Small Form Factor  Cannot mix Type 3 SAS with Type 3 SATA  PS3000 - PS5000  1GB Cache  Small Form Factor  Cannot mix Type 3 SAS with Type 4 controller  PS3000 - PS5000  1GB Cache  Small Form Factor  Cannot mix Type 3 SAS with Type 5 controller  PS5500 only  2GB Cache  Small Form Factor  PS6000 - PS6500  2GB Cache  Small Form Factor  Cannot mix SAS and SATA drives in same array  PS4000 only  2GB Cache  Small Form Factor  Cannot mix SAS and SATA drives in same array Dell EqualLogic Configuration Guide v11.3 4