Designing the Compaq ProLiant Clusters HA/F100 and HA/F200
2-21
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
Failure of the Host Bus Adapter-to-Storage Hub
Data Path
If the host bus adapter-to-storage hub path fails (Figure 2-11), it results in a
failover of all applications. For instance, if one server can no longer access the
storage hub (and by extension the shared storage), all of the cluster groups that
depend on shared storage will fail over to the second server. The cost of failure
is relatively minor. It is the downtime experienced by users while the failover
event occurs.
Corporate LAN
ProLiant
Server
ProLiant
Server
RA4000/4100
storage hub
or switch
Interconnect
Figure 2-11. Host bus adapter-to-storage hub data path
Note that the Compaq Insight Manager tools monitor the health of the
RA4000/4100 storage system. If any part of the Fibre Channel data path
disrupts a server’s access to the RA4000/4100, the array controller status
changes to “Failed” and the condition is red. The red condition bubbles up to
higher-level Compaq Insight Manager screens and eventually to the device
list.
NOTE:
The Compaq Insight Manager tools display a failure of physical hardware through
the Mass Storage button on the View screen, marking the hardware “Failed.” A logical
drive in the cluster is reported on the Cluster Shared Resources screen as a logical disk
resource. Compaq Insight Manager and Compaq Insight Manager XE do not associate the
logical drive with the physical hardware.
Summary of Contents for ProLiant Clusters HA/F100
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