Storageworks Fibre Channel Storage Hub 7; Storageworks Fibre Channel; Storage Hub 12 - Compaq StorageWorks 4000 - RAID Array Technology Brief

Compaq RAID Array 4000 Overview

StorageWorks Fibre Channel Storage Hub 7

The Storage Hub 7 is a seven-port hub that creates a 100 MB/s FC-AL through its internal wiring
and logic. In a standard RA4000 configuration, it connects one Fibre Channel Host Adapter and
up to six RA4000s. A 1U rack-mounting kit is available for the Storage Hub 7.
With the use of a Storage Hub 7, a Fibre Channel Host Adapter occupying a single I/O slot can
support up to six RA4000s for a total storage capacity of either of the following:
1.75 TB using 48 x 36.4 GB, 1.6-inch drives
1.31 TB using 72 x 18.2 GB, 1.0-inch drives
If, for example, sufficient slots were available in a server, 8 Fibre Channel Host Adapters plugged
into that server could support 48 RA4000s for a total capacity of approximately 14 TB.
RA4000s can be added to the Storage Hub 7 as requirements for storage capacity grow. When an
RA4000 is added to the hub, restart all servers on the system and run the Compaq Array
Configuration Utility.
StorageWorks Fibre Channel Storage Hub 12
The Storage Hub 12 is an intelligent, unmanaged, 12-port hub similar to the Storage Hub 7. Every
Storage Hub 12 includes both a rack-mounting kit and rubber feet for desktop use.
With the use of a Storage Hub 12, a Fibre Channel Host Adapter occupying a single I/O slot can
support up to 11 RA4000s for a total storage capacity of either of the following:
3.2 TB (using 88 x 36.4 GB, 1.6-inch drives)
2.4 TB (using 132 x 18.2 GB, 1.0-inch drives)
In a server with 8 PCI slots, Compaq Fibre Channel Storage Hub 12 allow a maximum storage
capacity of more than 25.6 TB. By contrast, Compaq SMART Array Controllers can support only
two ProLiant Storage Systems per I/O slot. The Storage Hub 12 is therefore the ideal solution for
RA4000 configurations requiring the highest level of slot utilization and storage capacity.
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