Compaq AA-RHGWC-TE manual Hardware Requirements and Restrictions

The maximum number of drives behind an HSG80 (single or dual-redundant pair) using three dual-bus Model 4254 disk enclosures is 42.

The Model 4214R and Model 4254 disk enclosures support only the new Compaq hot-pluggable wide-UltraSCSI low voltage differential (LVD) disk drives.

For more information on configuring the MA8000/EMA12000, see the Compaq StorageWorks Modular Array Configuration Guide.

•Only disk devices attached to the HSG60 or HSG80 Fibre Channel array controller are supported with the TruCluster Server product.

•No tape devices are supported behind an HSG60 or HSG80 RAID array controller.

•The only supported Fibre Channel adapters are the KGPSA-BC and KGPSA-CA PCI-to-Fibre Channel host bus adapters.

•The KGPSA-BC/CA PCI-to-Fibre Channel adapters are only supported on the DWLPB PCIA option; they are not supported on the DWLPA.

•A host is only allowed to have one KGPSA connected to each switch or switch zone.

•The only Fibre Channel switches supported are the DS-DSGGA-AA/AB 8/16 port, DS-DSGGB-AA/AB 8/16 port, or DS-DSGGC-AA 8 port Fibre Channel switches.

•The DSGGA and DSGGB Fibre Channel switches support both shortwave (GBIC-SW) and longwave (GBIC-LW) GigaBit Interface Converter (GBIC) modules. Seven of the eight DSGGC ports are fixed shortwave optical transceivers. Only one DSGGC port is configured as a removable GBIC. It may be shortwave or longwave.

The GBIC-SW module supports 50-micron, multimode fiber cables with the standard subscriber connector (SC) connector in lengths up to 500 meters. The GBIC-LW supports 9-micron, single-mode fiber cables with the SC connector in lengths up to 10 kilometers.

The KGPSA-BC/CA PCI-to-Fibre Channel host bus adapters and the HSG60 and HSG80 RAID controller support the 50-micron Gigabit Link Module (GLM) for fiber connections. Therefore, only the 50-micron multimode fiber optical cable is supported between the KGPSA and switch and the switch and HSG60 or HSG80 for cluster configurations. You must install GBIC-SW GBICs in the DSGGA and DSGGB Fibre Channel switches (or one DSGGC open port) for communication between the switches and KGPSA or HSG60/HSG80.

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