Dell PowerVault 221S Optimizing Dell SCSI Solutions - Page 15

A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 (SCSI) host adapter with RAID control capabilities. It provides reliable fault-tolerant disk subsystem management and is an ideal RAID solution for internal storage in Dell's PowerEdge enterprise systems. The RAID controller offers a cost-effective way to implement RAID in a server. Dell is currently offering its fourth generation of RAID controllers, the PERC 4e family, supporting the industry standard Ultra320 SCSI storage interconnect. PERC 4e RAID controllers support the PCI-Express host interconnects for maximum bandwidth connectivity & expandability. The PERC 4e family of controllers includes the PERC 4e/SI and PERC 4e/DI for RAID On Motherboard solutions and the PERC 4e/DC add-in HBA. The following matrix describes the benefits of each solution. Previous generations of PERC have included the PERC 2, PERC 3 and PERC 4 families. The following PERC solutions support the PowerVault 220S and 221S External SCSI Storage solution: • Table 3-1: PERC Solution supported by PV22xS Maximum Speed 80 MB/s 160 MB/s 320 MB/s Card PERC 2/DC PERC 2/QC 39160 HBA PERC 3/DC PERC 3/QC PE 2600 ROMB (PERC 4/Di on this server) PE 1750 ROMB (PERC 4/Di on this server) PERC 4/SC PE 2800 ROMB (PERC 4e/Di on this server) PE 2850 ROMB (PERC 4e/Di on this server) PE 6800 ROMB (PERC 4e/Di on this server) PE6850 ROMB (PERC 4e/Di on this server) PERC 4/DC (PCI, dual channel U320 RAID add-in HBA) PERC 4e/DC (PCI-Express, dual channel U320 RAID addin HBA) SCSI Cabling HBA and PERC controllers support a low-voltage differential (LVD) SCSI bus. LVD enables cables up to 12 meters long. Throughput on each SCSI channel can be as high as 320 MB/sec. PAGE 15 11/17/2005