Compaq ProLiant Clusters HA/F100, Administrator'S Manual

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2-8 Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide
Compaq Confidential – Need to Know Required
Writer: Bryan Hicks Project: Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide Comments:
Part Number: 380362-003 File Name: c-ch2 Designing the Compaq ProLiant Clusters HAF100 and HAF200.doc Last Saved On: 8/24/00 12:00 PM
Example 4: Database/Standby Server
An example business scenario describes a mail order business whose
competitive edge is quick product delivery (Figure 2-4). If the product is not
delivered on time, the order is void and the sale is terminated. The business
uses a single server to perform queries and calculations on order entry
information, translating sales orders into packaging and distribution
instructions for the warehouse. With an estimated downtime cost of
$1,000/hour, the company determines that the cost of a standby server is
justified.
This mission-critical (active) server is clustered with a standby server. If the
active server encounters a failure, this critical application and all its resources
fail over to the standby server, which validates the database and brings it
online. The standby server now becomes active and the application executes at
an acceptable level of performance.
Mail Order System
Shared Storage
(Mail Order Database)
(Standby)
Node1 Node2
Capacity
(Mail Order System)
Figure 2-4. Active/standby server example