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EMC VNX Review
The auto-tiering helps in the speed of data access.


Valuable Features

The most valuable feature is the auto-tiering, which helps in the speed of data access. We have a big VMware storage pool in each of our three arrays and we have never had users complain about response of any VM in our environment.

Improvements to My Organization

It is very easy to create new storage for a new requirement. Adding more storage to an existing storage pool is very quick and easy.

Room for Improvement

There is no easy way to defrag a RAID group. It would be nice to be able to reduce the size of a storage pool if the storage is not needed anymore.

When you need to defrag a raid group, in earlier array versions of EMC arrays like the CX line all you needed to do was to right click the raid group and select the Defrag option and the array would defrag the raid group. Now with the VNX series arrays, if you need to defrag a raid group it is a multi-step process that is all manual.

1. You need to list all the LUNs that need to be moved.

2. Then create temporary LUNs of the same size and SP in a location not in the raid group.

3. Migrate these LUNs to another location outside of the raid group.

4. Then create the LUNs again back in the original raid group, this will move all of the unused space to the end of the raid group.

5. Migrate the temporary LUNs back to these LUNs in the original raid group.

With that being said, with the VNX array, you never have to defrag the space in a Storage Pool.

Use of Solution

I have used it for three years.

Deployment Issues

The deployment was easy; we had EMC professional services help in the deployment.

Stability Issues

No issues in stability.

Scalability Issues

No issues in scaling up, but there is no way to reduce the size of a storage pool.

Customer Service and Technical Support

Customer Service:

EMC's customer service is excellent.

Technical Support:

Their technical support is great. They have been able to quickly help when I have encountered any issue with this platform.

Previous Solutions

We were previously using the CX3 arrays. We switched because the CX3 was end of life and we needed a platform that could support more disk space growth.

Initial Setup

The initial setup was straightforward. But, we did have professional services help with the installation.

Implementation Team

We used a vendor team.

Pricing, Setup Cost and Licensing

Make sure you understand how the licensing works and that you are getting the right set of licenses if you need array-to-array replication.

Other Solutions Considered

We also looked at the HPE 3PAR. I liked the array, but we stayed with the EMC product because we already knew how to manage it.

Disclosure: I am a real user, and this review is based on my own experience and opinions.

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