Fast Cache

andre.rossouw

I appreciate if you someone help with the these asked questions:

1- A customer wants to configure FAST Cache on their VNX storage system. Their working data set is 800 GiB in size. They plan to have sufficient FAST Cache to hold the working data set. There are currently no Flash drives in the storage system. The customer wants to follow EMC best practices.How can this be achieved?

Eight 200 GB Flash drives

Ten 200 GB Flash drives

Seventeen 100 GB Flash drives

Nineteen 100 GB Flash drives

2- A customer wants to add Flash drives to their VNX array and use them as FAST Cache. They want at least 850 GiB of FAST Cache capacity on each SP.There are no Flash drives in the array and they want to follow EMC best practices on hot spares.How can this be achieved?

Nine 200 GB Flash drives

Eleven 200 GB Flash drives

Seventeen 100 GB Flash drives

Nineteen 100 GB Flash drives

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I tried to find out the relation between skew and FAST cache but I could not find any useful information that gives me the correct answer among the provided answers...

I'm not sure if this is correct"FAST cache should be 5% of the active data " ..

I appreciate if you can explain the skew and FAST cache calculation .