A customer wants to upgrade a VSP E1090 to 1TB RAM capacity. What is the valid Cache Flash Memory (CFM) configuration?

Question

Options

• Aone BM70 per controller
• Btwo BM65 per controller
• Ctwo BM65 per system
• Dtwo BM70 per controller

• A
  18% (3)
• B
  6% (1)
• C
  6% (1)
• D
  71% (12)

Explanation

When the VSP E1090 is configured at 1TB RAM capacity, two BM70 modules per controller are required - the higher-capacity BM70 is necessary to match the larger memory footprint, and one module alone (option A) is insufficient to support that scale. The BM65 (options B and C) is a lower-capacity CFM module and cannot adequately back 1TB of cache, regardless of quantity per controller or system total. Option C is doubly wrong because CFM is always specified per controller, not per system - each controller must independently have its cache flash protected. A helpful memory tip: associate "bigger RAM = bigger module" (BM70 > BM65), and always think in pairs - high-capacity configurations pair two modules per controller for sufficient coverage.

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