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Green circuit board with silver bracket and four black SFF-8643 connectors

LSI

LSI 9305-16i 16-port SAS 12Gb/s HBA PCIe 3.0 x8

SKU CH-J1AA-97VH1

Connects 16 internal SATA or SAS drives at up to 12Gb/s via four SFF-8643 ports on a PCIe 3.0 x8 host bus adapter

  • 16 internal ports at 12 Gb/s for high-density storage
  • PCIe 3.0 x8 host interface delivers full bandwidth to the CPU
  • Four SFF-8643 connectors simplify internal cabling
  • Supports 3, 6 and 12 Gb/s link rates for drive flexibility
  • Connect up to 1024 SATA or SAS devices per controller

LSI 9305-16i HBA overview

The LSI 9305-16i is a host bus adapter that adds sixteen internal SATA and SAS ports to a server or workstation. It connects through a PCI Express 3.0 x8 slot and operates in IT mode for direct drive access. The card targets administrators who need to attach many hard drives or solid-state drives without a hardware RAID layer.

Interface and bandwidth limits

The board uses a PCI Express 3.0 x8 host link, so total throughput cannot exceed the bandwidth of that generation and lane count. Each of the sixteen ports supports SAS signalling at 3, 6 or 12 Gb/s, but the aggregate data rate is still bounded by the x8 upstream connection. Four SFF-8643 connectors each carry four lanes, so cable routing must match the x4 pinout.

Device count ceiling

The firmware supports up to 1024 SATA or SAS terminal devices across the sixteen ports. This limit decides whether the adapter fits a given storage topology; arrays or enclosures that would present more targets cannot be fully addressed. Buyers planning larger JBOD chains must verify the device count before selecting this card.

Highlights

  • 16 internal ports at 12 Gb/s for high-density storage
  • PCIe 3.0 x8 host interface delivers full bandwidth to the CPU
  • Four SFF-8643 connectors simplify internal cabling
  • Supports 3, 6 and 12 Gb/s link rates for drive flexibility
  • Connect up to 1024 SATA or SAS devices per controller

Specifications

No published specifications for this item yet.

Questions about this item

Which connector type does the 9305-16i use for its 16 internal ports?

The card provides four x4 internal small SAS HD connectors (SFF-8643), each carrying four lanes to reach 16 ports total.

What throughput can I expect from a single 12Gb/s SAS drive attached to this HBA?

A 12Gb/s SAS drive runs at the full 12Gb/s link rate; SATA drives negotiate at 6Gb/s or 3Gb/s depending on the drive.

Does the PCIe 3.0 x8 host interface limit the aggregate bandwidth of all 16 ports?

The x8 PCIe 3.0 link supplies ample headroom for the combined 12Gb/s SAS lanes under typical workloads.

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