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The VNX 5700 provides a large number of features including the ability to work for both file and block as a unified array. The ability to run a unified array is a great advantage when the company economics would not allow you to have separate arrays for your servers and another one for your file systems and use the unit as NAS. Through a single interface called UNISPHERE™, we manage the array. It allows you to administer both the block and file in a single pane. The process of extending the size of either an LUN or a file system is very intuitive. It also provides a command line interface that you can use to connect using Putty.exe but some of the commands that you can execute through the GUI are not available in CLI, or at least that is what EMC support has told me. Another great feature is the checkpoints for file systems. We use the checkpoints as backups for our file system instead of having them in a separate product. It is a risk to put the backups and production data in the same array, but we understood it and went with it. We have limited times when our checkpoints become corrupted for some reason (reaching a maximum size of a file system 16TB) or another but the majority of the time works according to plan. For the block, you can use LUN cloning and have the ability to present a copy of the same LUN used for production to your test environment and test applications, programs, OS, or any others without affecting your production environment. The replication feature provides another functionality to protect your data. In our scenario, we only use it for disaster recovery. Since we have a global presence and we are tasked to protect data from around the globe, we have enabled replication between locations. The replication works well between VNX and Celerra NS480s, NS40s, NS20s or NX4s. You can also set replication between VNXe (1st generation, like VNXe3300, VNX3150, or others) where your VNXe is the source. However, you can not set up a file system replication when the VNXe is the target of your replication job. Also, there are limitations with VNXe replication (second generation, like VNXe3200) since it would not allow you to establish replication partners. UNISPHERE™ Analyzer allows you to see the hot spots on the block side. When you enable the Analyzer, it collects performance data and then with EMC support you can see the areas of problem in the array. It allows you to justify adding more space or moving your servers around to other LUNs with less saturation. Once the user becomes familiar with how the Analyzer works, he/she could run it without engaging support and identify areas of concern. It is very helpful to show the application teams if the storage is causing the slowness of a particular application hosted in the specific LUN or not.
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