What happens when XIV with SSD caching installed suffers an SSD failure?
A.
SSD caching is disabled on all modules.
B.
The complete module with the failed SSD cache is taken off-line.
C.
SSD caching continues, but is unbalanced as one module has no SSD cache.
D.
The degraded module reads from its DRAM cache and disk, and all small read misses are
redirected to the secondaries.
Explanation:
The correct answer is D
The degraded module continues to serve reads from its DRAM cache and to serve large
sequential reads from disk. All small read misses are redirected to the secondary modules,
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its d
Solid-State Drive Caching in the IBM XIV Storage System
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