1-5
Cisco ASA 5500 Series Hardware Installation Guide
OL-10089-01
Chapter 1 Overview
Memory Requirements
Memory Requirements
Table 1-3
lists the CPU and the memory specifications for each model.
In a failover configuration, the two units must have the same hardware configuration. They must be the
same model, have the same number and types of interfaces, and the same amount of RAM.
Note
The two units do not have to have the same size Flash memory. If using units with different Flash
memory sizes in your failover configuration, make sure the unit with the smaller Flash memory has
enough space to accommodate the software image files and the configuration files. If it does not,
configuration synchronization from the unit with the larger Flash memory to the unit with the smaller
Flash memory will fail.
For more information, see the
Cisco Security Appliance Command Line Configuration Guide
.
Memory Requirements for Software Version 8.3 and Later
For information on memory requirements for the adaptive security appliance for software Version 8.3 or
later, go to:
http://www.cisco.com/en/US/prod/collateral/vpndevc/ps6032/ps6094/ps6120/product_bulletin_c25-58
6414.html
Table 1-3
CPU and Memory Specifications
ASA Model
CPU
Default DRAM Memory
Default Internal Flash Memory
Cisco ASA 5510
1.6 GHz Celeron
256 MB
512MB
Cisco ASA 5520
2.0 GHz Celeron
512 MB
512MB
Cisco ASA 5540
2.0 GHz Pentium 4 1024 MB
512MB
Cisco ASA 5550
3.0 GHz Pentium 4 4096 MB
512MB
