HP Traffic Director sa7220 - Manual (Page 90)

C H A P T E R 4 HP Traffic Director Server Appliances User Guide
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5. From the drop down menu, click to select the desired Server
Type. Available types are listed below:
• Primary: Primary servers are immediately available to
accept client requests forwarded from the SA8220.
• Backup: Backup servers are sent requests under only two
circumstances: First, when the primary servers are unable to
meet the configured target response times a backup server
may be used if and only if "backups" is enabled for this
service. Second, backup servers are given requests when a
primary server is unavailable. As primary servers become
inactive, backup servers are brought into service to handle
requests.
• Disabled: Renders the server unavailable to accept client
requests.
6. From the drop down menu, click to select the desired Server
Mode. This command enables or disables Source Address
Preservation (SAP) on the named server. When Out-of-Path
Return (OPR) is enabled, the user-designated server port is
ignored and the configured service server port is used. By
default, SAP is enabled (and cannot be disabled) when OPR is in
effect.
• For more details about SAP, please see Source Address
Preservation” in Chapter 2.
• For more details about OPR, please see “Out-of-Path Return
(OPR)” in Chapter 2.