1. IntroductionUser Guide Page 1-31.1.3.2 Hard Disk Drive (HDD) for the RAID SystemHard disk drives or solid state disks come in different storage capacities and performancelevels. For 3.5” SAS or SATA HDD for the A08S3-PS should be the same capacity, speedperformance, model, and firmware.Accusys recommends 3.5” SAS and SATA Enterprise HDDs for the A08S3-PS systems.1.1.3.3 ExaSAN QSFP Host Bus Adapter (Z2M)The ExaSAN QSFP HBA (Figure 3) requires an available PCIe x4, x8, or x16 slot in your clientsystem. Note that the PCIe slots on some motherboards are for graphics cards only. (Checkyour motherboard documentation or verify with the motherboard vendor for compatibility. Alsonote that some PCIe x4 or x8 slots only share or run at PCIe1.1 speed, so please be advised toconsult your motherboard documentation to take full advantage of ExaSAN’s performance.Figure 3: Z2M HBA card1.1.3.4 QSFP (Quad Small Form-factor Pluggable) PCIe Copper orOptical CablesA 2m QSFP Copper Cable is included in your A08S3-PS system package. It is used to connectthe host system to the storage system.Optional QSFP cables (Figure 4) are available at varying lengths in copper or optical1. 2m QSFP Copper Cable2. 10m QSFP Optical Cable3. 30m QSFP Optical Cable4. 50m QSFP Optical Cable5. 100m QSFP Optical CableFigure 4: QSFP optical cable