Specifications

System Overview QSSC-S4R Technical Product Specification
82
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.
AC SOURCE RELATED POWER SUPPLY CONFIGURATION AND SYSTEM LOAD LIMITS
The system configuration and load is limited by the number of AC mains power sources available as indicated in the
following table.
Table 29. System Power Supply Configuration and System Load Limits
Number
of
Power
Supply
Modules
Installed
AC Redundant Systems
(Requires 2 AC Sources)
AC Non-Redundant Systems
(Connected to 1 AC Source)
Max. DC
Loading
to Support AC
Redundancy
Installation Requirements
Max. DC
Loading
for AC Non-
Redundant
Systems
Installation Requirements
1 NA NA 830 W
1 PSU connected to mains
(1+ 0)
2 830 W 1 PSU connected to mains
1 PSU connected to an
isolated AC source. E.g UPS
(1+1)
1580 W 2 PSUs connected to mains
(2+0)
3 NA NA 2300 W
3 PSUs connected to mains
(3 + 0)
4 1580 W 2 PSUs connected to mains
2 PSUs connected to an
isolated AC source. E.g. UPS
(2+2)
2300 W 4 PSU connected to mains.
(4 + 0)
9.3.1 Power Distribution Board (PDB)
The power distribution board is located below the main board in the chassis. It has four connectors for hot-swap power
supply modules. It also contains the control logic supporting the cold redundancy feature, along with 240VA additional