You have been tasked with designing the storage layout for a VNX7600 array. VMware hosts will
attach to the array using two HBAs and two Fibre Channel switches. The array will have FAST VP,
SnapView, and FAST Cache installed.
The customer wants to use as many Flash drives as possible for FAST Cache. They also want to
put as many drives as possible into a single FAST VP pool while still being able to use SnapView.
Snapshots will be taken each day of 10 x 1 TB LUNs and will be used for backups to tape. Once
the backups complete, the snapshots will be destroyed. The customer insists on using SnapView
due to the backward compatibility with their scripts. The source LUNs will produce less than 20%
change daily.
The array has the following hard drives installed.
— 31 X 200 GB Flash hard drives
— 38 X 600 GB 15K SAS hard drives
— 17 X 2 TB 7.2K NL-SAS hard drives
The entire design should follow EMC best practices.
How should the LUNs for the reserve LUN pool be configured?
A.
Create 10 X 200 GB LUNs
B.
Create 10 X 2000 GB LUNs
C.
Create 20 X 100 GB LUNs
D.
Create 20 X 1000 GB LUNs
It seems A is a correct answer:
10TB data, less than 20% rate of change per day > 2TB changed data per day or less
2TB RLP size. 10% of 2TB is 200GB.
10x200GB sounds right.
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Hello Ice_Man,
According the Best practices of EMC it is recommended to use 2 RLP for source LUN, That is why the correct answer is C
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