A customer has an application that uses a dataset of 15 TB. The skew for the application is 97%. The application requires storage capable of performing 10,000 IOPs. The application R/W ratio is 3:1
The VNX system for the application has the following disk configuration:
Ten FAST Cache optimized 200 GB Flash drives
Ten FAST VP optimized 100 GB Flash drives
Twenty 600 GB 15 krpm SAS drives
Fifty 2 TB NL-SAS drives
The customer wants to implement the most efficient solution. How should the pool for the application be configured?
A. 5x 200 GB FAST Cache optimized Flash configured 4+1 R5 5x 600 GB 15 krpm SAS drives configured as 4+1 R5 16x 2 TB NL-SAS drives configured as 6+2 R6
B. 5x 200 GB FAST Cache optimized Flash configured 4+1 R5 8x 600 GB 15 krpm SAS drives configured as 4+4 R1/0 16x 2 TB NL-SAS drives configured as 6+2 R6
C. 10x 100 GB FAST VP optimized Flash configured 4+1 R5 10x 600 GB 15 krpm SAS drives configured as 4+1 R5 8x 2 TB NL-SAS drives configured as 6+2 R6
D. 5x 100 GB FAST VP optimized Flash configured 4+1 R5 10x 600 GB 15 krpm SAS drives configured as 4+1 R5 8x 2 TB NL-SAS drives configured as 6+2 R6
A customer creates a multi-tiered pool with the following configuration:
Five 200 GB FAST VP optimized Flash drives configured as 4+1 RAID 5 Five 600 GB 15 krpm SAS drives configured as 4+1 RAID 5 Twenty-four 2 TB NL-SAS drives configured as 6+2 RAID 6
The customer's workload consists of 8 kB random I/Os with a R/W ratio of 2:1.
How many host IOPs can the pool support?
A. 3,337 writes/s and 6,673 reads/s
B. 28,060 IOPs
C. 20,560 IOPs
D. 3,697 writes/s and 7,393 reads/s
A customer creates a multi-tiered pool with the following configuration:
Five 200 GB FAST VP optimized Flash drives configured as 4+1 RAID 5 Ten 600 GB 15 krpm SAS drives configured as 4+1 RAID 5 Sixteen 2 TB NL-SAS drives configured as 6+2 RAID 6
The customer's workload consists of 4 kB random I/Os with a R/W ratio of 2:1.
How many host IOPs can the pool support?
A. 3,397 writes/s and 6,793 reads/s
B. 28,240 IOPs
C. 20,740 IOPs
D. 6,913 writes/s and 13,827 reads/s
What is a restriction for the High Bandwidth option for classic LUNs?
A. Only supported for RAID 5 4+1 .
B. Recommended for FLASH drives.
C. Limited to VNX File OE LUNs.
D. Only supported for RAID1/0 4+4.
A customer is considering purchasing a new VNX with MCx. Performance of the application is the top priority. What would you recommend the customer consider before proceeding with this design?
A. overhead associated with tracking the metadata of a Thin LUN and detriment to performance as the LUN grows.
B. The benefits of FAST Cache with regard to improving LUN performance
C. FAST VP and the improved granularity of the data slices
D. Classic LUN
A customer is considering purchasing a new VNX with MCx. They have a performance sensitive application and would like to use the Thin LUN to maximize pool capacity. What would you recommend the customer consider before proceeding with this design?
A. Overhead associated with tracking the metadata of a Thin LUN
B. Point out that FAST Cache cannot be enabled with Thin LUNs
C. FAST VP and the improved granularity of the data slices
D. Using Classic LUN
A customer designed an environment using VNX LUNs presented to individual hosts. They configured a Pool to start using both Thick and Thin LUNs. One of the standalone servers is an archive server running on Windows. They want to maximize capacity on the standalone server since the data is no longer accessed. They have no more drives to increase LUN capacity.
How can the customer increase available capacity to the archive server?
A. Compress the data on the LUN
B. Add oversubscribed capacity to the existing LUN
C. Delete old files
D. Back up the files, reconfigure the LUN, and restore the data
During decompression with default settings, if the pool becomes too full, decompression will be paused but host I/O can continue. At what percent full will host I/O be terminated to the LUN?
A. 91%
B. 98%
C. 100%
D. 80%
Considering LUN compression in a VNX, how has initial compression performance changed in VNX with MCx?
A. Higher bandwidth per LUN in MCx
B. Addition of 'Extreme' compression rate option
C. Lower bandwidth per LUN than previous VNX Block OE releases
D. No change from previous VNX Block OE releases
A customer needs to reclaim space and has decided to enable compression on a Thick LUN in their environment.
What happens to the LUN when it becomes compressed?
A. The Thick LUN is converted to Thin then compresses
B. The Thick LUN remains Thick but compresses
C. Thick LUNS cannot be compressed
D. The Thick LUN will clone itself then compress
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