Product guide

Chapter 1: System Description QSSC-S4R Server System Product Guide
Version 1.0
10
Three power supply module are capable of handling the maximum power requirements for a fully configured
QSSC-S4R Server System, which include the following:
 Four processors
 512GB of memory
 Eleven PCIe add-in cards (including the SAS RAID riser)
 Eight hard disk drives
 One optical drive
 One tape drive
The table below describes the maximum system support under each configuration SKU:
Table 7. Maximum System Configuration Support
Enterprise SKU (8x HDD) Value SKU (6x HDD)
Processors
4 4 4
Memory Risers
8 8 4
DIMM Rank/DIMM Qty
QR/32
(8 Memory Risers with 4
DIMMs on each riser)
QR/64**
(8 Memory Risers with 8
DIMMs on each riser)
QR/32
(4 Memory Risers with
8 DIMMs on each riser)
IO Riser
Yes Yes Yes
SAS Riser
Yes Yes No
Hot Swap/Total PCIe*
4/10 4/10 0/5
System fans
7+1 7+1 4+0
2.5” HDDs
8 8 6****
Optical Device
Yes Yes No
5.25” Tape Device
Yes Yes No
Power Supply
2+2 3+1 2+0
12V Available Power
1660W 2300W 1660W
Power Redundancy
AC/DC DC Only*** AC Only*****
*Exclude SAS riser slot.
**Some QRx4 configurations like > 32 DIMMs will have thermal limitations and so will throttle memory
subsystem.
***Refer to “AC Redundant and Non-Redundant Operations” in the following section.
****Will support 6 SATA drives without an optical device or tape device or 5 with a slim-line optical device or tape.
***** Refer to “AC Redundant and Non-Redundant Operations” in the following section.
When the system is configured with four power supply modules, the hot swap feature allows the user to replace
a failed power supply module without affecting the system functionality.
A 3-volt lithium battery provides power to the RTC when the Main Board is powered down. The expected battery
life is greater than 5 years.