Functional Descriptions; Pcie Interface; Sas Interface; Operating System Support - Lenovo N2225 User Manual

N2225 and N2226 SAS/SATA HBAs User's Guide
October 2015
3

Functional Descriptions

3.1

PCIe Interface

PCIe is a high-speed standard local bus for point-to-point interfacing of I/O components to the processor and the
memory subsystems in high-end computers and servers. The N2225 HBA uses one LSI SAS 3008 controller chip and
one PCIe switch to provide high-bandwidth interconnection ability. The N2226 HBA uses two LSI SAS 3008 controller
chips and one PCIe switch to provide high-bandwidth interconnection ability.
Both the HBAs supports eight-lane PCIe performance up to 64Gb/s single direction and up to 128Gb/s dual direction.
3.2

SAS Interface

The LSI SAS 3008 controller chip contains the SATA+SAS functionality for the HBAs. The following table shows the
LSI SAS 12Gb/s SAS performance.
Half Duplex
Narrow port (one lane), 1200 MB/s Narrow port (one lane), 2400 MB/s
Wide port (four lanes), 4800 MB/s
4

Operating System Support

To check for the latest list of supported operating systems and to download the device drivers for those operating
systems, see
5

HBA Characteristics

5.1

Flash

The N2225 HBA provides one 4-M × 16-bit Flash ROMs to store the firmware and the BIOS.
The N2226 HBA provides two 4-M × 16-bit Flash ROMs to store the firmware and the BIOS.
5.2

LED

The N2225 HBA Heartbeat LED, CR1, blinks green to indicate the HBA is capable of general activity.
The N2226 HBA Heartbeat LEDs, CR3 and CR4, blink green to indicate the HBA is capable of general activity.
Wide port (four lanes), 9600 MB/s
http://www.ibm.com/systems/support/.
Full Duplex
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N2225 and N2226 SAS/SATA HBAs
Functional Descriptions