HBA Features

The Sun Storage 6 Gb SAS REM HBA (SGX-SAS6-REM-Z, SG-SAS6-REM-Z) provides eight serial PHYs for connection to SAS/SATA (Serial ATA) devices. Each PHY is capable of 1.5 Gb, 3 Gb, or 6 Gb SAS and SATA link rates. The PCIe transmission and reception data rate is 5 Gb in each direction, yielding a total bandwidth of 10 Gb for each full-duplex lane.

The HBA contains on-board Flash ROM for storing BIOS and firmware, and NVSRAM for embedded mirroring. The LEDs on the HBA report a heartbeat, activity, and fault conditions when detected by the firmware. Fusion-MPT firmware operates the HBA.

The functionality of the HBA comes from the LSISAS2008 controller chip. The HBA controller connects up to eight SAS/SATA devices to a computer system through the PCIe signals routed through the mezzanine connector. The HBA controller uses eight PCIe PHYs.

The HBA has the following features:

• Serial SCSI protocol (SSP), serial ATA tunneling protocol (STP), and serial management protocol (SMP), as defined, in the Serial Attached SCSI (SAS) Specification, version 2.0

• Support for RAID levels 0, 1, and 10

• Support for a maximum of two logical RAID volumes that can be provided by the HBA

• Support for a maximum of 10 physical devices within any single RAID volume and a maximum of fourteen physical devices within all RAID volumes combined

• Configurable drive spin-up sequencing on a per-PHY basis

• A serial, point-to-point, enterprise-level storage interface

• Ability to transfer data using SCSI information units

• Compatibility with SATA target devices

• Narrow and wide ports (see 6 Gb SAS Bandwidths)

Oracle's Sun Storage 6 Gb SAS REM HBA shows the physical features of the HBA.

Figure 1-1  Oracle's Sun Storage 6 Gb SAS REM HBA