Juniper SRX5800 Hardware Manual page 194

Sample configuration for SRX5800 Services Gateway chassis with six SRX5K-SPC-2-10-40 (SPC2) and
one SRX5K-SPC3 (SPC3):
Four high-capacity AC power supplies (using two feeds for each power supply); two supplies are active,
two are redundant.
Two SRX5K-SCB4s (SCB4) with two SRX5K-RE3-128Gs (RE3) installed in slot number SCB 0 and SCB
1 of the chassis.
Three IOC4s (SRX5K-IOC4-10G or SRX5K-IOC4-MRAT) Modular Port Concentrator
Six SPC2s & one SPC3 Services Processing Cards
NOTE: You must have high-capacity power supplies (either AC or DC) and high-capacity
fan trays installed in the services gateway in order to install and use SPC2 and SPC3. If you
do not have high-capacity power supplies and fan trays installed, the services gateway will
log an alarm condition when it recognizes the SPC.
High-capacity cooling system (upper and lower fan trays)
NOTE: The high-capacity cooling system satisfies cooling requirements of SPC2 & SPC3
and must be used for proper cooling.
195