You can read the requirements in the document located here:
http://www.cisco.com/en/US/docs/security/csa/csa60/release_notes/CSA60RN.html#wp136711
Or read below:
System Requirements (CSA MC)
Minimum Server Requirements
System Component
Hardware
• IBM PC-compatible computer
• Color monitor with video card capable of 16-bit
Processor
1 GHz or faster Pentium processor
Operating System
Windows 2003 R2 Standard or Enterprise Editions, Service Pack 0, 1, or 2
Note To run terminal services on the CSA MC system, you must edit the MC policy.
File System
NTFS
Memory
1 GB minimum memory
Virtual Memory
2 GB virtual memory
Hard Drive Space
9 GB minimum available disk drive space
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System Requirements (Agent)
To run Cisco Security Agent on your Windows servers and desktop systems, the requirements are as follows:
Agent Requirements (Windows)
System Component
Processor
Intel Pentium 200 MHz or higher
Note Up to eight physical processors are supported.
Operating Systems
Windows Vista Business and Enterprise editions with service pack 0 or 1.
Windows Server 2003 (Standard, Enterprise, Web, or Small Business Editions) Service Pack 0, 1, or 2
Windows XP (Professional, Tablet PC Edition 2005, or Home Edition) Service Pack 0, 1, 2, or 3.
Windows Embedded Point of Service (WEPOS) 1.1
Windows 2000 (Professional, Server or Advanced Server) with Service Pack 0, 1, 2, 3, or 4
Note Citrix Metaframe and Citrix XP are supported. Terminal Services are supported on Windows 2003, Windows XP, and Windows 2000.
Memory
256 MB minimum-all supported Windows 2003, Windows XP, and Windows 2000 platforms
512 MB minimum-for Windows Vista.
Hard Drive Space
60 MB or higher
Note This includes program and data.
Network
Ethernet
Note Maximum of 64 IP addresses supported on a system.
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To run Cisco Security Agent on your Solaris server systems, the requirements are as follows:
Agent Requirements (Solaris)
System Component
Processor
UltraSPARC 400 MHz or higher
Note Uni-processor, dual processor, and quad processor systems are supported.
Operating Systems
Solaris 9, 64 bit, patch version 111712-11 or higher installed.
Solaris 8, 64 bit 12/02 Edition or higher (This corresponds to kernel Generic_108528-18 or higher.)
Memory
256 MB minimum
Hard Drive Space
50 MB or higher
Note This includes program and data.
Network
Ethernet
Note Maximum of 64 IP addresses supported on a system.
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To run the Cisco Security Agent on your Linux systems, the requirements are as follows:
Agent Requirements (Linux)
System Component
Processor
500 MHz or faster x86 processor (32 bits only)
Operating Systems
RedHat Enterprise Linux 4.0 WS, ES, or AS
RedHat Enterprise Linux 3.0 WS, ES, or AS
Memory
256 MB minimum
Hard Drive Space
50 MB or higher
Network
Ethernet
Note Maximum of 64 IP addresses supported on a system.
