HP ProLiant 4500 Compaq ProLiant Cluster HA/F100 and HA/F200 Administrator Gui - Page 50

Failure of the Host Bus Adapter-to-Storage Hub, Data Path, HA/F100 Fibre Channel Data Paths

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Designing the Compaq ProLiant Clusters HA/F100 and HA/F200 2-19 HA/F100 Fibre Channel Data Paths The Compaq StorageWorks RAID Array 4000 storage system (formerly Compaq Fibre Channel storage system) is the mechanism with which ProLiant Clusters implement shared storage. Generally, the storage system consists of Compaq StorageWorks Host Adapters (host bus adapters) in each server, a Compaq StorageWorks Fibre Channel Storage Hub, a Compaq StorageWorks RA4000 Controller (array controller), and a Compaq StorageWorks RAID Array 4000 into which the SCSI disks are placed. The RA4000 storage system has two distinct data paths, separated by the storage hub: s The first data path runs from the host bus adapters in the servers to the storage hub. s The second data path runs from the storage hub to the RA4000. The effects of a failure will vary depending on whether the failure occurred on the first or second data path. Failure of the Host Bus Adapter-to-Storage Hub Data Path RA4000 storage hub Interconnect ProLiant Server ProLiant Server Corporate LAN Figure 2-10. Host bus adapter-to-storage hub data path

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Designing the Compaq ProLiant Clusters HA/F100 and HA/F200
2-19
HA/F100 Fibre Channel Data Paths
The Compaq StorageWorks RAID Array 4000 storage system (formerly
Compaq Fibre Channel storage system) is the mechanism with which ProLiant
Clusters implement shared storage. Generally, the storage system consists of
Compaq StorageWorks Host Adapters (host bus adapters) in each server, a
Compaq StorageWorks Fibre Channel Storage Hub, a Compaq StorageWorks
RA4000 Controller (array controller), and a Compaq StorageWorks RAID
Array 4000 into which the SCSI disks are placed.
The RA4000 storage system has two distinct data paths, separated by the
storage hub:
■
The first data path runs from the host bus adapters in the servers to the
storage hub.
■
The second data path runs from the storage hub to the RA4000.
The effects of a failure will vary depending on whether the failure occurred on
the first or second data path.
Failure of the Host Bus Adapter-to-Storage Hub
Data Path
Corporate LAN
ProLiant
Server
ProLiant
Server
RA4000
storage hub
Interconnect
Figure 2-10.
Host bus adapter-to-storage hub data path