SSD Cache

SSD cache, also known as flash caching, is an easy and cost-effective way to improve the performance of your Synology NAS.

Small upgrade, big performance gain

A relatively small SSD cache can dramatically boost the data writing and reading speeds of large HDD volumes. In in-house tests, adding SSD cache to an all-HDD storage array boosted random write and read IOPS more than 15 times, and cut average latency by up to 93%.

All-HDD storage array with SSD cache

All-HDD storage array without SSD cache

15x

higher random read and write IOPS

Two SSD cache modes for your use scenario

Are you seeking to improve the performance of a static web server or file server, to boost your indexing and database applications, or to speed up virtual machine storage? Choose the most efficient SSD cache mode for your application.

Read-only cache

Improve random read performance when small files are frequently accessed and rarely modified.

Read-write cache

Improve read and write performance when small files are frequently accessed, modified, and created.

Flexibility in SSD cache integration

Most Synology NAS support installing SSD cache using one or several of the following interfaces:

  • Drive trays

    Install 2.5" SSDs using regular drive trays
  • Built-in M.2 SSD slots

    Install M.2 NVMe SSDs using built-in slots
  • Add-on M.2 adapter cards

    Install M.2 NVMe or SATA SSDs using add-on adapter cards
  • Drive trays
  • Built-in M.2 SSD slots
  • Add-on M.2 adapter cards
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Flexibility in SSD cache integration

Most Synology NAS support installing SSD cache using one or several of the following interfaces:

Drive trays

Install 2.5" SSDs using regular drive trays
Drive trays

Built-in M.2 SSD slots

Install M.2 NVMe SSDs using built-in slots
Built-in M.2 SSD slots

Add-on M.2 adapter cards

Install M.2 NVMe or SATA SSDs using add-on adapter cards
Add-on M.2 adapter cards

Built-in data loss protection

Data on read-write SSD cache modules are protected against data loss by a RAID configuration. Users can choose to create a RAID1, RAID 5, or RAID 6 setup. If an SSD fails and the RAID degrades, I/O operations are diverted to HDD and all data is written back to the source, ensuring data integrity and operational continuity.

Advanced analytics with Synology SSD

Full integration with Synology’s DiskStation Manager (DSM) enables lifetime analytics for each SAT5200 unit based on actual workloads:

Timely Notifications

Plan further ahead for uninterrupted system performance and longevity with timely notifications.

Optimal Use

Easy monitoring allows you to make optimal use of each SSD.

Synology SSD for cache applications

Synology enterprise-grade SAT5200 SATA SSD and SNV3000 series NVMe SSD are developed in tandem with Synology NAS. They provide proven interoperability and high reliability through rigorous validation and compatibility testing. Combine Synology SSD with Synology NAS for a highly reliable and integrated storage setup, and receive long-term Synology updates and support.

2.5” SATA SSD
SAT5200

Modernize storage infrastructure with Synology solid-state drives

Learn more
M.2 NVMe SSD
SNV3000 Series

Boost the I/O performance of your Synology NAS

Learn more