Figure 5-27. Hewlett-Packard FC Mass Storage Topology
This topology demonstrates how to attach to one host, using one I/O adapter, four mass storage devices, for example two Fibre Channel disk arrays and two SCSI tape devices, possibly DLT tape libraries, through a hub. Figure 5-28. Hewlett-Packard FC Mass Storage Topology
This topology demonstrates a possible configuration using two hubs. Looking at the diagram, remember a long-wave hub has one hub-to-hub port, leaving nine other ports for devices. So you can see more possibilities with more devices. Remember also that just because there aremultiple disk arrays and multiple other SCSI devices, and the possibility of many more devices being attached to the hubs, this is not a high availability configuration. In this particular topology there are a couple of single points of failure. For example, there is only one FC adapter. If it fails the host will not be able to communicate with any device in the entire storage area network (SAN). The cable from the FC adapter to the first hub is also a single point of failure. 5.10.1 Year 2000 IssuesAll Hewlett-Packard enterprise storage devices are Year 2000 compliant when configured according to Hewlett-Packard standards. Year 2000 compliance applies to disk drives, disk arrays, tape drives , tape libraries, magneto-optical devices, and Fibre Channel infrastructure products. All products are compliant in the original revisions shipped by Hewlett-Packard except for the Model 12 and Model 12H. The Model 12 and 12H have logging utilities that require a patch to make them Year 2000 compliant. Minimum patch revisions are shown below. Model 12 and Model 12H Minimum Patch Revisions for Year 2000 compliance Operating System Minimum Patch Revision:
For more information on specific products refer to the Hewlett-Packard Year 2000 Website at http://hpweb.y2k.nafohq.hp.com |