The DVA7400 is in Synology's FS, HD, SA, UC, XS+, XS, DP, and DVA/NVR series policy table. On it, an unlisted hard drive is supported for migration from an existing Synology system only - not for a new storage pool; an unlisted 2.5" SATA/SAS SSD is supported for migration from an existing Synology system only; and an unlisted M.2 NVMe SSD is supported for migration from an existing Synology system only. A drive on Synology's incompatibility list is not supported at all. Source: Synology, DSM 7.3, last updated 27 May 2026.
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A surveillance recorder, the DVA7400 sits in the KB's DVA/NVR group: an unlisted hard drive is supported for migration only, which matters more on a machine bought to be filled with recording drives.
Synology's article states: “The table below summarizes drive compatibility by product series and drive type for models released in 2025 and later:” This is the FS, HD, SA, UC, XS+, XS, DP, and DVA/NVR series table, transcribed from its merged cells. "Not Listed" is the column you are in with almost any drive bought on price.
| Drive type | On compatibility list | Not listed | On incompatibility list |
|---|---|---|---|
| HDD | Supported for new installation and storage pool creation and migration from an existing Synology system | Supported for migration from an existing Synology system | Not supported |
| 2.5" SATA/SAS SSD | Supported for new installation and storage pool creation, cache creation and migration from an existing Synology system | Supported for migration from an existing Synology system | Not supported |
| M.2 NVMe SSD | Supported for new installation and storage pool creation, cache creation and migration from an existing Synology system | Supported for migration from an existing Synology system | Not supported |
A drive on Synology's incompatibility list is not supported for a new installation or storage pool, for cache, or for migration - on every series. The incompatibility list is not the same thing as being absent from the compatibility list. A drive on it is one Synology has tested and found incompatible; Synology's Storage Manager article defines that status as “This drive is tested to be incompatible with your Synology storage system.” A drive that is merely missing from the compatibility list is "Unverified" instead - “This drive has not been verified as compatible with your Synology storage system.” - and Synology says that for such a drive its technical support “may only provide limited assistance.”
On the DVA7400 an unlisted hard drive cannot build a new pool, and every hard drive on Synology's list was a Synology drive when we read the list on 2026-08-19. So for a new pool this lists Synology's own SATA drives in stock - check the compatibility list for the DVA7400 before you buy, because a drive on the list for one model is not automatically on it for another. Third-party hard drives fit the bays but are supported here for migration only.
| Drive | Capacity | $/TB | Price | Condition | |
|---|---|---|---|---|---|
| Synology HAT5300 16TB NAS | 16TB | $62.50 | $999.99 | New This offer: sold by Adorama · Amazon says New / Unknown · Adorama's note: New | Buy on Amazon → |
2.5-inch SATA SSDs: on the DVA7400 an unlisted 2.5" SATA/SAS SSD is supported for migration only, so we do not list third-party SSDs for it - check Synology's list for the model.
The full Synology drive policy, every series · Same table: RS6426xs+, RS11626xs+, DP7200, DP5200
Which models this cluster covers: those on Synology's product list (50 products, read 2026-10-05) with a 2025-or-later launch announcement in Synology's newsroom (read 2026-10-05). We do not infer a launch year from a model number.
Only by migration. The DVA7400 is in Synology's FS, HD, SA, UC, XS+, XS, DP, and DVA/NVR series table, where an unlisted hard drive is supported for migration from an existing Synology system, and not for a new installation or a new storage pool. Synology attaches a condition: "Drives must be migrated directly from an existing Synology system. If the original storage pool or SSD cache is removed from the drive, the drive will no longer be usable in your current Synology system." Source: Synology, DSM 7.3, last updated 27 May 2026.
Synology's spec page for the DVA7400 lists no M.2 slot, so the question does not arise on this model. For the series, an unlisted M.2 NVMe SSD is supported for migration from an existing Synology system only.
A drive on Synology's incompatibility list is not supported for a new installation or storage pool, for cache, or for migration - on every series. That is a separate list from the compatibility list: a drive on it is one Synology has tested and found incompatible, which Storage Manager reports as "Incompatible". A drive simply missing from the compatibility list is "Not Listed", the middle column of the table on this page.
Synology announced it on August 26, 2026 ("Synology launches DVA7400, bringing enterprise-scale AI surveillance fully on-premises"). It matters because Synology states: "The new drive compatibility policies apply only to new models starting in 2025 and do not apply retroactively to previously launched systems." A model launched before 2025 is outside these tables altogether.
Synology's article is written for "DSM 7.3 and above" and gives no build number and no date for the change, so we print neither. Its last-updated stamp is 2026-05-27; we last read it on 2026-10-05.