Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O2000 for Orac - Page 141
Table 5-1, Active/Active Cabling Methods, Method, Active Array, Controller, Location, Advantage
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5-12 Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide Table 5-1 summarizes the active/active cabling methods. Select the method that is best for your site. Method 1 2 Table 5-1 Active/Active Cabling Methods Active Array Controller Location Top array controller slot Top array controller slot in oddnumbered RA4000/RA4100 Arrays Bottom array controller slot in even-numbered RA4000/RA4100 Arrays Advantage Consistency in active array controller definition. All active array controllers are defined to be in the top array controller slot in each RA4000/RA4100 Array. Consistency in cabling. All cables from Storage Hub/Switch #1 connect to the top array controller in each RA4000/RA4100 Array. All cables from Storage Hub/Switch #2 connect to the bottom array controller in each RA4000/RA4100 Array. Disadvantage Cabling is more complex than for method 2. Some cables from each Storage Hub connect to the top array controller in each RA4000/RA4100 Array, and some cables from each Storage Hub or FC-AL Switch connect to the bottom array controller in each RA4000/RA4100 Array. Defining active array controllers is more complex than for method 1. The active array controller must be defined as the top array controller slot in some RA4000/RA4100 Arrays and as the bottom array controller slot in other RA4000/RA4100 Arrays.