Documentation/UsersReferenceManual/GettingStarted/07-System-Requirements

Chapter 7. System Requirements For Red5

Supported operating systems Windows 2000 Server
Windows 2003 Server, Standard Edition
Linux Variants
Mac OSX 10.4 and above
Minimum Hardware Requirements
(Development / Budget / Low Traffic)
X86-compatible CPU (Pentium 4, 3.2 GHz or better, Intel Duo Core 2, PentiumD)
1 GB Available Memory
100MB or 1GB Ethernet card
200 MB of available disk space (SATA II)
Recommended Hardware Requirements
(High Traffic Production)
Dual-core / Quad Core (Intel XEON 2Ghz and above, Opteron 2Ghz and above)
2 - 4 GB Available memory or above
1GB Ethernet Card with big pipe network
200 MB of available disk space (10K RPM and above SATA II \ SCSI RAID 1-5)
Network Storage Cluster Solution for mass content storage (ie Isolon, Dell MD1000)
Software Requirements Java JRE 1.5 or 1.6
Service Scripts (Java Service Wrapper, FireDaemon Pro)

Java Memory Tweaking