Intel JBOD 2000 Family, Руководство по оборудованию

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Intel® Storage Server System JBOD 2000 Family Hardware Guide JBOD 2000 Internal Connection Overview
Revision 1.42 35
6. JBOD 2000 Internal Connection Overview
The Intel ® Storage Server System JBOD 2000 contains the SAS expander board, power
distribution board, HSBP, SAS interface board, and fans in its chassis. This chapter provides
specification of the SAS expander board and SAS converter, and interconnection between
those components.
6.1 Expander Board
The Intel 36-port expander is mounted vertically in the chassis and is designed on LSI’s Bobcat
expander technology. The expander has nine SFF8087 mini-SAS connectors that connect to
either the backplane or the SAS converter boards via SFF8087 to SFF8087 cables. The dual-
port backplane of the JBOD contains two 36-port expanders, while the single-port backplane
contains one 36-port expander.
Features of the Intel ® RAID Expander are as follows:

SAS protocol, described in the Serial Attached SCSI (SAS) Standard, version 2.0

Serial SCSI Protocol (SSP) to enable communication with other SAS devices

Serial Tunneling Protocol (STP) support for SATA II through expander interfaces

Serial Management Protocol (SMP) to share topology management information with
expanders

Supports SES for enclosure management

Output mini-SAS connectors support sideband SGPIO as per SFF-8485 specification

Supports both Serial Attached SCSI and Serial ATA device targets

6.0 Gb/s, 3.0 Gb/s, and 1.5 Gb/s data transfer rate

SFF-8087 mini-SAS connectors

Provides a low-latency connection to create and maintain transparent access to each
connected SAS/SATA physical drive

Staggered spin-up

Hot-plug

Native Command Queuing

Allows multiple initiators to address a single target (in a fail-over configuration)
All JBOD SKUs use the 36-port SAS expander card. Single-port JBOD 2000 SKU has one 36-
port SAS expander card; dual-port JBOD 2000 SKU has two 36-port expander cards.