HP e-Commerce / XML director server appliance sa8250 - Users Guide

A P P E N D I X C HP e-Commerce/XML Director Server Appliance SA8250 User Guide
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This table shows the feature availability under different failover
modes.
Failover
Mode
Feature Single
Interface
with
“outside”
router
Dual Interface Dual
Interface
with
“outside”
router
Dual Interface
with “inside”
and “outside”
routers (3)
Serial
Cable
Failover
OR
Disabled
VIP ARPing Only on
same
subnet
Same subnet,
only on
“outside”
Same subnet,
only on
“outside”
Same subnet, only
on “outside”
DHCP Not with
“Serial”
No No No
HOT Yes Yes Yes Yes (5)
HOT and SAP Yes (1) Yes (1) Yes (1) Yes (1) (4)
OPR Yes (needs
router)
N/A Yes No
RICH Yes Yes Yes Yes (5)
RICH and
SAP
Yes (1) Yes (1) Yes (1) Yes (1) (4)
Routed VIP ARPing No (uses
loopback)
Requires router No (uses
loopback)
Same subnet, only
on “outside”
DHCP Yes Requires router No No
HOT Yes Requires router Yes Yes (5)
HOT and SAP No Requires router Yes (1) Yes (1) (4)
OPR No Requires router No No
RICH Yes Requires router Yes Yes (5)
RICH and
SAP
No Requires router Yes (1) Yes (1) (4)
Availability Under Different Failure Modes