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Dell Storage Comparison: PowerStore, PowerVault, Unity XT, PowerMax, PowerScale & VxRail – What is the Difference?

When I hear Dell, the first thing that comes to mind (besides Michael Dell) is a 2U Dell PowerEdge server. But Dell is more than just servers—their storage lineup is massive and competitive. No matter the size of your business, Dell has a storage solution that balances performance, scalability, and cost.


Save up to 80%: Dell Storages and SSDs, HDDs

HPE and IBM are strong players in the storage market, but Dell stands right alongside them. In this article, we’ll break down Dell’s storage offerings and help you navigate the options.


Dell storage solutions overview featuring PowerStore, PowerMax, PowerScale (Isilon), Unity XT, VxRail, and PowerVault. High-performance enterprise storage for AI, ML, virtualization, and hybrid cloud. Image provided by server-parts.eu

 

Dell Storage Product Overview and Comparison


Dell PowerStore

🔹 NVMe all-flash & hybrid storage

🔹 AI-driven automation

🔹 Scales up to 8PB

🔹 Best for databases, AI/ML, virtualization


Dell PowerVault

🔹 Entry-level SAN/NAS storage

🔹 Up to 4PB capacity, RAID support

🔹 Designed for SMBs, backup, archiving


Dell Unity XT

🔹 Hybrid & all-flash storage

🔹 Unified block & file storage

🔹 Cloud tiering (AWS, Azure, GCP)

🔹 Ideal for mid-sized businesses


Dell PowerMax

🔹 Enterprise NVMe storage

🔹 <100µs latency, 12M+ IOPS

🔹 Zero-trust security

🔹 Ideal for mission-critical workloads


Dell PowerScale (Isilon)

🔹 Scale-out NAS storage

🔹 Multi-protocol support (S3, NFS, SMB)

🔹 Built for unstructured data, AI/ML


Dell VxRail

🔹 VMware vSAN-based HCI

🔹 NVMe caching, up to 64 nodes

🔹 Best for private/hybrid clouds, VDI


 

Dell PowerStore Storage: Modern, AI-Optimized Storage


Popular Models: 

  • T-Series (Traditional Storage Arrays):

    • PowerStore 500T, 1200T, 3200T, 5200T, 9200T

  • X-Series (Software-Defined & Virtualized):

    • PowerStore 1000X, 3000X, 5000X, 7000X, 9000X

  • Q-Series (QLC-Optimized Storage):

    • PowerStore 3200Q

Feature

Details

Architecture

Scale-up and scale-out storage with NVMe SSDs and Storage Class Memory (SCM)

Performance

Up to 7M IOPS and sub-millisecond latency

Scalability

Clusters up to 4 appliances with max ~8PB storage

Data Services

AI-driven automation, deduplication, compression (4:1 efficiency), active-active replication

Connectivity

NVMe/TCP, Fibre Channel, iSCSI

Integration

VMware vVols, Kubernetes, REST API, CloudIQ analytics

Best Use Cases:

  • High-performance databases (SQL, Oracle, SAP)

  • AI & Machine Learning workloads

  • Virtualized environments (VMware, Hyper-V)

  • Hybrid Cloud with Dell Apex



 

Dell PowerVault Storage: Affordable SAN & NAS for SMBs


Popular Models:

  • ME4 Series:

    • ME4012, ME4024, ME4084

  • MD Series:

    • MD1420, MD3420, MD3820


Feature

Details

Architecture

Entry-level SAN & DAS with iSCSI, Fibre Channel, and SAS connectivity

Performance

Hybrid HDD + SSD storage, optimized RAID support

Scalability

Up to 4PB raw capacity, expandable enclosures

Data Services

Snapshot replication, thin provisioning, auto-tiering

Connectivity

SAS, iSCSI, Fibre Channel (8/16/32G FC)

Integration

VMware, Windows Server, Hyper-V support

Best Use Cases:

  • SMBs looking for cost-effective shared storage

  • Backup & archiving solutions

  • Entry-level virtualization environments



 

Dell Unity XT Storage: Cost-Effective, Midrange Storage


Popular Models: 

  • Hybrid Models:

    • Unity XT 380, Unity XT 480, Unity XT 680, Unity XT 880

  • All-Flash Models:

    • Unity XT 380F, Unity XT 480F, Unity XT 680F, Unity XT 880F

Feature

Details

Architecture

Unified block and file storage

Performance

Hybrid (HDD + SSD) or All-Flash NVMe models, up to 5M IOPS

Scalability

Up to 16PB max storage, active-active scale-up nodes

Data Services

Deduplication & compression (3:1), Cloud Tiering (AWS, Azure, GCP)

Connectivity

Fibre Channel, iSCSI, SMB, NFS

Integration

VMware & Hyper-V support, REST API, Ansible automation

Best Use Cases:

  • General enterprise workloads (VMware, file sharing, VDI)

  • Mid-size organizations needing hybrid cloud storage

  • Virtualized applications & databases



 

Dell PowerMax Storage: Enterprise-Class, Ultra-Performance Storage


Popular Models: 

  • PowerMax 2000

  • PowerMax 2500

  • PowerMax 8000

  • PowerMax 8500

Feature

Details

Architecture

Multi-controller scale-out storage, 100% NVMe flash

Performance

Up to 12M+ IOPS per array, <100µs latency with SCM

Scalability

4PB per system, multi-array clustering

Data Services

5:1 data reduction, ransomware protection, zero-trust security

Connectivity

NVMe-oF, Fibre Channel, iSCSI (32G FC supported)

Integration

AI-driven management, CloudIQ analytics, Mainframe (z/OS) support

Best Use Cases:

  • Mission-critical applications & large-scale databases

  • High-frequency trading & real-time analytics

  • Multi-cloud environments requiring ultra-low latency

  • Tier-0 storage for AI, SAP HANA, Oracle, SQL



 

Dell PowerScale (Isilon) Storage: Scalable NAS for Unstructured Data


Popular Models: 

  • F-Series (All-Flash Nodes):

    • F200, F600, F900, F210, F710, F910

  • H-Series (Hybrid Nodes):

    • H700, H7000

  • A-Series (Archive Nodes):

    • A300, A3000

Feature

Details

Architecture

Scale-out NAS designed for massive unstructured data growth

Performance

Multi-node architecture optimized for AI and high-throughput workloads

Scalability

Virtually unlimited scalability, seamless node expansion

Data Services

Multi-protocol support (NFS, SMB, S3) for AI/ML workloads

Connectivity

Ethernet-based storage with high-speed networking

Integration

Supports edge-to-core-to-cloud workflows

Best Use Cases:

  • AI, ML, and data lake environments

  • Media & entertainment (video editing, rendering, storage)

  • Healthcare imaging and scientific research



 

Dell VxRail Storage: Hyperconverged Infrastructure (HCI) for VMware


Popular Models: 

  • VxRail E Series:

    • E560, E560F

  • VxRail P Series:

    • P570, P570F

  • VxRail V Series:

    • V570, V570F

  • VxRail S Series:

    • S570

  • VxRail D Series:

    • D560, D560F

  • VxRail G Series:

    • G560, G560F

Feature

Details

Architecture

Pre-configured VMware vSAN nodes, scale-out architecture

Performance

All-flash & hybrid models, NVMe caching

Scalability

Up to 64 nodes per cluster, vSAN stretched clusters

Data Services

Built-in replication & high availability, automated lifecycle management

Connectivity

25/100GbE networking, RDMA support

Integration

Full VMware stack, vCenter-driven management, VMware Cloud Foundation

Best Use Cases:

  • VMware-based private & hybrid clouds

  • Virtual Desktop Infrastructure (VDI)

  • Multi-site data centers & edge computing

  • Disaster recovery



 

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