12CHAPTER 1: INTRODUCING THE SERVER LOAD BALANCER

About the Server The SuperStack® 3 Server Load Balancer and Server Load Balancer Plus

Load Balancer provide support for connecting multiple high-performance servers to a Gigabit backbone and providing server load balancing, cache redirection and security functionality.

Summary of Table 3 summarizes the hardware features that are supported in both Hardware Features models of the Server Load Balancer.

Table 3 Hardware Features

 

Server Load Balancer

Feature

Server Load Balancer Plus

 

 

Memory

64 MB for Server Load Balancer Plus

 

32 MB for Server Load Balancer

12 10/100 LAN Ports

Supported

2 Gigabit Ethernet Ports

Supported

SuperStack 3 Architecture

Connects to a SuperStack 3 Advanced

 

Redundant Power System (ARPS)

 

Installs in a 19-inch rack or stand-alone

 

mounting

 

 

Summary of Software Table 4 summarizes the software features that are supported in both Features models of the Server Load Balancer.

Table 4 Software Features

 

Server Load Balancer

Feature

Server Load Balancer Plus

 

 

 

Algorithms

Round Robin

 

Weighted Round Robin

 

Least Connections

 

Quickest Last Response

 

Quickest Average Response

 

Weighted Percentage

Port Trunking (Etherchannel)

Supported

Up to 256 servers

Supported

TCP/IP Sessions

16,000 for the Server Load Balancer

 

128,000 for the Server Load Balancer Plus

Persistence Modes

Source IP

 

Secure Socket Layer (SSL) Session ID

 

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HP SuperStack 3 Load Balancer Appliance Feature Server Load Balancer Plus Memory, 12 10/100 LAN Ports, TCP/IP Sessions