EMC Hardware
EMC VNX Terms to Know

15 Need To Know EMC VNX Terms

A range of enterprise-grade unified file and block storage systems is called Dell EMC VNX. The total cost of ownership and operation of the storage system is decreased because of the industry-leading simplicity and efficiency of the Dell EMC VNX storage systems, which also offer data storage scalability and flexibility. 

The following storage devices are part of the Dell EMC VNX family: 


In this article, we will look at 15 essential EMC VNX terms you need to know.

Block Storage

In storage area networks, files are kept in block storage, commonly referred to as block-level storage (SANs). iSCSI and Fibre Channel are popular methods for accessing block storage (FC). Performance-wise, block storage outperforms file-level storage. By utilizing the unified storage capability of VNX storage systems, Dell EMC VNX storage systems can be set up to offer block storage, file-level storage, or both. 

Unified Storage

Unified storage is a feature of Dell EMC VNX storage systems. Block-level storage (SAN) and file-level storage (NAS) can be offered concurrently using the unified storage capability of VNX storage systems. 

Unisphere Service Manager (USM)

A set of tools known as Unisphere Service Manager, or USM, can be used to manage a Dell EMC VNX storage system. USM assists with the installation, setup, and upkeep of the hardware and software for VNX storage systems. Additionally, USM can be used to alert the storage system’s maintenance about the VNX storage system. 


The storage processors used in Dell EMC VNX storage systems run a customized version of Microsoft Windows called FLARE, which stands for Fibre Logic Array Runtime Environment. 

Fully Automated Storage Tiering (FAST)

Fully Automated Storage Tiering, or FAST, is a feature of Dell EMC VNX storage systems. Data that is accessed frequently is automatically moved to high-performance storage tiers via the FAST function of VNX storage systems, while data that is accessed less frequently are automatically moved to low-cost, high-capacity storage tiers. FAST allows the VNX storage system to operate more efficiently while spending less money. 


High-performance solid-state drives (SSDs) can be used by the FAST CACHE feature of Dell EMC VNX storage systems to expand the cache that is accessible to the VNX storage system. 


The logging information produced by Dell EMC VNX storage systems is referred to as SPCollects. 

Storage Processor Enclosure (SPE) and Disk Processor Enclosure (DPE)

In the bigger Dell EMC VNX storage systems, specifically the VNX5700 and VNX7500, Storage Processor Enclosures (SPEs) are present. The other storage units in the Dell EMC VNX storage family all have disk processor enclosures (DPEs). The storage processors of a VNX storage system are located in both the SPE and DPE. Drives are not present in SPEs. DPEs, on the other hand, include vault drives and storage processors. 

Disk Array Enclosure (DAE)

Disk Array Enclosures, or DAEs, contain the drives that make up the disk array in Dell EMC VNX storage systems. To increase the amount of storage available on the VNX system, extra drives can be connected via DAEs. Drive carriers, disk drives, a midplane, link control cards (LCCs), power supply and cooling modules, and EMI shielding comprise DAEs. 

Automatic Volume Management (AVM)

The creation and administration of volumes can be automated thanks to a function of Dell EMC VNX storage systems called Automatic Volume Management, or AVM. System administrators can construct and extend file systems using the AVM capability without creating and maintaining the underlying volumes. 

Data Mover

For file-level access to storage via the LAN, data movers on Dell EMC VNX storage systems run their operating systems (OSes). In other words, data movers enable network-attached storage to be used with VNX storage (NAS). Data movers use network protocols such as NFS and CIFS. 


As used with Dell EMC VNX storage systems, the storage area network is referred to as SAN. In contrast to NAS (network-attached storage), SAN is a network of storage systems that gives servers access to block-level data storage. 


Network-attached storage is known as NAS. NAS (network-attached storage) offers file-level data storage for servers and other systems on a network, in contrast to SAN (storage area network). Local area networks are frequently connected to NAS, unlike SAN (LANs). One VNX storage system from Dell EMC may provide both NAS and SAN services because it supports unified storage. 

Storage Processor

The Dell EMC VNX storage processors (SPs) are responsible for retrieving and writing data to the disk array. 

Vault Drive

The write data originating from a storage processor is cached on vault drives in Dell EMC VNX storage systems. To help prevent data loss in the event of a power outage or a storage processor failure, write data is cached in vault drives.

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