Product guide

QSSC-S4R Server System Product Guide Chapter 1: System Description
Version 1.0
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Hot Swap Backplane Board
The Hot Swap Backplane (HSBP) supports up to eight 2.5-inch SATA or SAS drives, depending on whether the
system has an SAS riser installed.
The board mounts to hooks on the HDD bay and supports the following features:
 Support up to eight 2.5” hot swap SAS/SATA HDD in a horizontal orientation
Support SAS HDD running at both 3Gb and 6Gb speeds
Support SATA HDD running at 1.5Gb and 3Gb speeds
 6Gbit SAS ports provide high-speed serial data paths from the eight attached SAS hard drives to the SAS
riser.
 SAS data between drives and riser are routed across two 4-port internal SAS cables that connect the
backplane to the PCIe SAS riser, the RAID controller card (HBA). In turn, the SAS RAID HBA is plugged into
the baseboard at the PCIe SAS riser slot.
 Eight drives are connected to two x4 SFF-8086* SAS connectors that are used to control SAS traffic flow
between drives and the SAS RAID raiser card.
 No mixing of SAS / SATA drives are supported
 No SAS/SATA drive type detection is supported
 Only drive present detect is supported
 SAS enclosure management per SES-2 (System Enclosure Specification) through I2C cable or SGPIO for
the SAS RAID riser
 Server management I2C interface
 Support one half-size 5.25” SATA tape device
 Support one SATA slim-line optical disk device (ODD), DVD-RW
 Maxim VSC410 enclosure management microcontroller
 8MB FW Flash ROM
 5V regulator to power HDDs, one slim-line optical device, and for a 5.25" tape device. HSBP board does not
provide 12V power or data signals for the 5.25" tape device.
 “System board” TMP75 temp sensor dedicated for monitoring 5V regulator.
 Two SAS/SATA SGPIOs
 HSBP control
 Power connector for optical drive and tape drive
 HDD Activity LED
 HDD Fault/Rebuild LED
 I2C Serial EEPROM (FRU)
 Ambient temperature sensor
 Voltage regulators
 12VDC to 5VDC
 Connectors for main input power