Dell EMC PowerScale alternatives for cloud file storage

If you’re looking for alternatives to Dell EMC PowerScale (Isilon) for cloud or cloud-adjacent file storage, the best option depends on whether you need:

• NFS/SMB shared file storage
• Very large scale-out NAS
• Hybrid/cloud bursting
• Strong Windows integration
• Built-in object support
• Managed service vs self-managed

Main alternatives

1. NetApp ONTAP / Cloud Volumes

Good fit if you want enterprise NAS features similar to PowerScale.

• Cloud Volumes ONTAP on AWS/Azure/GCP
• Azure NetApp Files for fully managed file storage in Azure
• Supports NFS, SMB, iSCSI
• Strong data management, snapshots, replication, tiering

Best for: enterprise workloads, hybrid cloud, migration from traditional NAS

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2. AWS FSx

Managed file storage options from AWS.

• FSx for ONTAP: closest enterprise alternative to PowerScale
• FSx for Windows File Server: best for SMB/Windows-heavy environments
• FSx for Lustre: high-performance HPC/analytics use cases

Best for: AWS-native deployments, managed service preference

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3. Azure Files

Microsoft’s managed SMB/NFS file service.

• Integrates well with Windows and Entra ID/Azure AD
• Supports SMB, and in some tiers NFS
• Easy to consume for shared file workloads

Best for: Microsoft-centric environments, lift-and-shift file shares

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4. Google Cloud Filestore

Managed NFS service in Google Cloud.

• Simple managed NFS
• Good for app shares, containers, and Linux workloads
• Less feature-rich than PowerScale/ONTAP

Best for: GCP workloads needing straightforward NFS

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5. IBM Storage Scale (formerly Spectrum Scale / GPFS)

A high-end scale-out file system often compared with PowerScale.

• Very scalable
• Supports hybrid and cloud deployments
• Strong for HPC, analytics, and large unstructured data sets

Best for: HPC, AI/ML, large-scale enterprise file systems

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6. Qumulo

Modern scale-out file storage software and managed options.

• Strong file analytics and observability
• Cloud and hybrid deployment support
• NFS/SMB compatible

Best for: organizations wanting PowerScale-like scale with simpler operations

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7. Nasuni

Cloud file services with edge caching.

• File data stored in object storage underneath
• Global file locking and file sharing
• Good for distributed teams and branch offices

Best for: global collaboration, replacing traditional file servers

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8. Panzura

Cloud file platform built on object storage.

• Designed for distributed/global file access
• Good for caching and collaboration across sites
• Often used in media, architecture, engineering

Best for: multi-site access, large distributed teams

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9. MinIO / Ceph / Open-source options

If you’re really open to rethinking the architecture:

• MinIO: S3-compatible object storage
• Ceph: open-source storage platform with file/object/block
• Usually not direct PowerScale replacements unless your apps can use object storage

Best for: cloud-native apps, cost-sensitive storage, DIY environments

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Quick recommendations by use case

• Closest enterprise replacement: NetApp ONTAP / FSx for ONTAP
• Best for AWS: FSx for ONTAP
• Best for Azure: Azure NetApp Files or Azure Files
• Best for GCP: Filestore
• Best for HPC / large-scale analytics: IBM Storage Scale or FSx for Lustre
• Best for global file collaboration: Nasuni or Panzura
• Best for simpler managed NAS: Qumulo

What to consider before choosing

• Required protocols: NFS, SMB, S3
• Deployment model: fully managed vs self-managed
• Performance: throughput, IOPS, latency
• Scale: file count, total capacity, concurrency
• Cloud/provider lock-in
• Data protection: snapshots, replication, DR
• Hybrid/on-prem integration
• Cost model: storage, snapshots, egress, metadata, caching

If you want, I can also give you:

1. a feature-by-feature comparison table, or
2. a shortlist of the best alternatives based on your cloud provider and workload.