Synology SNV3410-400G M.2 NVMe SSD for NAS Caching: specs and fit

The Synology SNV3410-400G is a 400GB M.2 2280 NVMe solid-state drive made for Synology NAS (network-attached storage) systems. It is not a general-purpose drive for a desktop: Synology designed it to act as a cache, speeding up access to data that is used often. Here is what that means and what to check first.

What an SSD cache does in a NAS

A NAS usually stores files on large hard drives, which are roomy but slower at handling many small requests at once. An SSD cache keeps frequently used data on fast flash storage, so repeated reads and small writes are answered quickly. Synology says the SNV3410 boosts I/O performance and system responsiveness, and that it is designed to handle tough caching workloads in a 24/7, multi-user environment. Caches help most where many people or services hit the same data, such as shared files or virtual machines.

Reading the performance figure

Synology rates the drive at up to 70,000 4K random write IOPS. IOPS means input/output operations per second, and 4K random writes are small scattered writes, the kind that caching workloads produce. It is a peak figure from the brand; real results depend on the NAS model, workload and cache settings.

Endurance and analytics

Cache drives write data constantly, so endurance matters. Synology says this model is built for that sort of workload and comes with advanced lifetime analytics, which let the NAS software report on the drive's condition. The drive carries a five-year limited warranty from Synology.

Form factor and compatibility

M.2 2280 means a gumstick-shaped card 22mm wide and 80mm long. The listing says it is made for Synology NAS models with built-in M.2 slots, or for use through an additional M.2 adapter card: the M2D18, M2D20 or E10M20-T1. Synology advises checking its website for compatible models, which is the key step before buying. Synology describes the drive as purpose-built for its own systems, so it is not intended for general use elsewhere.

Who it suits

It suits owners of compatible Synology NAS units who want to speed up shared storage, small offices running many simultaneous users, or anyone running workloads that repeatedly access the same data. It is less useful if your NAS mostly stores archives that are rarely opened.

What to check before you buy

• Compatibility: confirm your NAS model is on Synology's compatibility list.
• Slots: check whether the NAS has built-in M.2 slots or needs one of the listed adapter cards.
• Capacity: cache drives are usually small compared with the main storage; check how much cache your workload needs.
• Workload: caching helps with repeated access; check the manual to see whether your use will benefit.
• Software version: check the DSM version and settings that your NAS needs for SSD caching.

The short version

• A 400GB enterprise M.2 2280 NVMe SSD from Synology.
• Made for caching in Synology NAS units, with up to 70,000 4K random write IOPS.
• Designed for 24/7, multi-user environments, with lifetime analytics.
• Works in built-in M.2 slots or via the M2D18, M2D20 or E10M20-T1 adapter cards.
• Five-year limited warranty.

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