What is the difference between NetApp FAS and NetApp AFF: Comparison and Available Models
- server-parts.eu server-parts.eu
- Nov 29, 2024
- 3 min read
Updated: Nov 1
When choosing between NetApp FAS and NetApp AFF, the main difference is simple: performance versus flexibility. Both belong to the ONTAP family, which means they share the same operating system, data services, and management tools.
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Both systems can run side by side in the same ONTAP cluster, so upgrading from FAS to AFF later is simple and doesn’t require a full migration.
Core Difference: NetApp FAS and NetApp AFF
Feature | NetApp AFF (All-Flash FAS) | NetApp FAS (Hybrid) |
Storage Media | SSD only | HDD or SSD |
Performance | Low latency, high throughput | Balanced and cost-efficient |
Capacity (per system) | Up to 2,880 SSDs (cluster-dependent) | Up to 1,440 drives (cluster-dependent) |
Use Cases | Databases, virtualization, analytics, AI/ML | File sharing, backup, archival |
Cost | Higher | Lower |
NetApp AFF delivers flash-only speed and reliability. NetApp FAS offers mixed drive support for organizations focused on capacity and cost.
NetApp AFF Series: Flash-Optimized for Performance (NetApp FAS and NetApp AFF)
Model | Description |
NetApp AFF A250 | Compact 2U model for small and mid-size environments. |
NetApp AFF A400 | Mid-range unit with strong throughput for mixed workloads. |
NetApp AFF A800 | NVMe-powered model supporting NVMe-over-Fabrics; ideal for demanding databases or analytics. |
NetApp AFF A900 | High-end model for enterprise workloads with large-scale clustering and advanced scalability. |
Older models like NetApp A200, NetApp A300, and NetApp700 are no longer sold but remain in service through the refurbished market.
NetApp FAS Series: Hybrid and Cost-Effective (NetApp FAS and NetApp AFF)
Model | Description |
NetApp FAS2700 | Entry-level system for smaller deployments, up to 144 drives. |
NetApp FAS8300 | Mid-range model for general-purpose storage, up to 720 drives. |
NetApp FAS8700 | Higher performance model for enterprise environments. |
NetApp FAS9500 | Modular flagship system, scalable up to 1,440 drives in clusters. |
Older systems such as NetApp FAS8200 and NetApp FAS9000 are now replaced by these newer series but remain supported.
Common ONTAP Features (NetApp FAS and NetApp AFF)
Both FAS and AFF systems use NetApp ONTAP OS, which provides:
Unified management: identical tools and interfaces across both systems.
Data protection: SnapMirror, SnapVault, and Snapshot technologies for replication and backup.
Cloud integration: FabricPool for automatic tiering to AWS, Azure, and Google Cloud.
Security: built-in encryption (NVE, NSE) and FIPS-certified drives.
Cluster scalability: up to 24 nodes per cluster.
This shared platform simplifies administration and protects long-term investment.
How to Choose (NetApp FAS and NetApp AFF)
Requirement | Best Option | Reason |
High-performance workloads (AI/ML, databases, virtualization) | NetApp AFF | Flash-only design ensures consistent speed. |
General-purpose storage or mixed workloads | NetApp FAS | Combines HDD and SSD for balance between cost and performance. |
Budget limits | NetApp FAS | Lower entry cost and flexible drive options. |
Future scalability | Both | Clustered ONTAP supports growth in capacity and nodes. |
Refurbished Option (NetApp FAS and NetApp AFF)
For buyers aiming to reduce cost, refurbished AFF or FAS systems can deliver up to 50% savings with proper warranty and support. These units often come from data center refresh projects and retain full ONTAP compatibility.
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