Need shared file storage for app servers

If you need shared file storage for app servers, the right choice depends on whether you want simple shared files, high performance, POSIX semantics, or cloud-managed storage.

Common options

1) Network File System (NFS)

Best for: simple shared directories for multiple app servers.

• Pros: Easy to set up, widely supported, works like a normal mounted filesystem
• Cons: Can become a bottleneck, not ideal for very high IOPS or heavy concurrency
• Use cases: Web apps sharing uploads, config files, media assets, job artifacts

2) SMB/CIFS

Best for: Windows-heavy environments or mixed Windows/Linux sharing.

• Pros: Good Windows support, easy file sharing
• Cons: Usually not the first choice for Linux app servers unless needed
• Use cases: Shared documents, Windows app servers

3) Cloud Managed File Storage

Best for: cloud-native apps that need shared storage without managing servers.

Examples:

• AWS EFS for Linux app servers

• Azure Files

• Google Filestore

• Pros: Managed, scalable, easier ops

• Cons: Cost, latency, and some performance tradeoffs vs local disk

4) Distributed/Cluster Filesystems

Best for: larger scale or high availability.

Examples:

• CephFS

• GlusterFS

• Pros: Shared storage with redundancy and scale

• Cons: More complex to operate

5) Object Storage instead of shared filesystem

Best for: uploads, media, backups, static assets.

Examples:

• S3 / S3-compatible storage

• Pros: Cheap, durable, highly scalable

• Cons: Not a filesystem; app changes may be needed

Quick recommendation

• If you want the easiest solution for Linux app servers: NFS
• If you're on AWS and want managed storage: EFS
• If you need Windows sharing: SMB/Azure Files
• If you're storing user uploads or static assets at scale: consider object storage instead of shared filesystem

Important design note

For app servers, shared storage is often used for:

• uploads
• shared logs
• session files
• temporary artifacts

But for sessions, it’s usually better to use:

• Redis
• Memcached
• database-backed sessions

because shared file storage can become a performance and reliability bottleneck.

If you want, I can recommend the best option based on:

• your cloud/on-prem setup
• Linux vs Windows
• expected file size and traffic
• whether you need high availability