A technical architect is designing a Dell Unity XT 480 using the System Designer option of Sizer. What is the recommended minimum amount of Flash that they should specify?
Answer is A
Minimum 5% Flash component offsets some skew in the workload and accelerates metadata for buffer cache misses.
For a hybrid pool, capacity distribution of tiers is key.
Size Flash + SAS to satisfy most workload requirements.
Use NL-SAS to capture inactive data.
Keep a minimum 5% Flash component and increase Flash capacity to hold an active dataset.
For capacity growth, keep in mind:
Overall capacity growth vs. active data growth. More data requires more capacity.
Movement or expansion of “hot blocks” of active data. Flash capacity may not be enough to handle all the workload, and performance may be affected.
Longer-term planning for growth
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3 months ago