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One or more Compaq StorageWorks RAID Array 4000s RA4000

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4-4 Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide I One or more Compaq StorageWorks RAID Array 4000s (RA4000 Arrays) or Compaq StorageWorks RAID Array 4100s (RA4100 Arrays) I Two single-port Compaq StorageWorks RAID Array 4000 Controllers (RA4000 Array Controllers) installed in each RA4000/RA4100 Array. Only one array controller in the RA4000/RA4100 Array is active at any one time; the other is the standby array controller. NOTE: For more information about redundant Fibre Channel Fabrics in a PDC/O2000 cluster, see Chapter 2, "Cluster Architecture." The Fibre Channel SAN Switches are available in 8-port and 16-port models. To determine which Fibre Channel SAN Switch model is appropriate for a redundant Fibre Channel Fabric in your cluster, identify the total number of nodes and RA4000/RA4100 Arrays present. If the combined number of nodes and RA4000/RA4100 Arrays exceeds eight, you must use 16-port Fibre Channel SAN Switches. Also consider the possibility of future cluster growth when you select your models. The number of RA4000/RA4100 Arrays and shared disk drives used in a PDC/O2000 depends on the amount of shared storage space required by the database, the hardware RAID levels used on the shared storage disks, and the number and storage capacity of disk drives installed in the enclosures. Refer to "Raw Data Storage and Database Size" in this chapter for more details. NOTE: For improved I/O performance and cluster integrity, as you increase the number of nodes in a PDC/O2000 cluster, you should also increase the aggregate bandwidth of the shared storage subsystem by adding more or higher-capacity disk drives.

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4-4
Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide
■
One or more Compaq StorageWorks RAID Array 4000s (RA4000
Arrays) or Compaq StorageWorks RAID Array 4100s (RA4100 Arrays)
■
Two single-port Compaq StorageWorks RAID Array 4000 Controllers
(RA4000 Array Controllers) installed in each RA4000/RA4100 Array.
Only one array controller in the RA4000/RA4100 Array is active at any
one time; the other is the standby array controller.
NOTE:
For more information about redundant Fibre Channel Fabrics in a PDC/O2000
cluster, see Chapter 2, “Cluster Architecture.”
The Fibre Channel SAN Switches are available in 8-port and 16-port models.
To determine which Fibre Channel SAN Switch model is appropriate for a
redundant Fibre Channel Fabric in your cluster, identify the total number of
nodes and RA4000/RA4100 Arrays present. If the combined number of nodes
and RA4000/RA4100 Arrays exceeds eight, you must use 16-port Fibre
Channel SAN Switches. Also consider the possibility of future cluster growth
when you select your models.
The number of RA4000/RA4100 Arrays and shared disk drives used in a
PDC/O2000 depends on the amount of shared storage space required by the
database, the hardware RAID levels used on the shared storage disks, and the
number and storage capacity of disk drives installed in the enclosures. Refer to
“Raw Data Storage and Database Size” in this chapter for more details.
NOTE:
For improved I/O performance and cluster integrity, as you increase the number of
nodes in a PDC/O2000 cluster, you should also increase the aggregate bandwidth of the
shared storage subsystem by adding more or higher-capacity disk drives.