Best SSD for a Proxmox Boot Drive in 2026
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Our Pick
WD Blue SN580 250GB
A small NVMe boot drive with a 150 TBW rating and a 5-year warranty. Use SATA instead when an M.2 slot is worth more for VM storage.
WD's client SSDs are now sold under the SanDisk brand. Verify lifecycle (opens in a new tab)
| Specification | Our pick: WD Blue SN580 250GB (opens in a new tab) Our Pick | Samsung 870 EVO 250GB (opens in a new tab) SATA Alternative | Kingston NV2 250GB (opens in a new tab) Budget Mirror |
|---|---|---|---|
| Interface | M.2 NVMe, PCIe 4.0 | 2.5-inch SATA | M.2 NVMe, PCIe 4.0 |
| Rated endurance | 150 TBW | 150 TBW | 80 TBW |
| Warranty | 5 years | 5 years | 3 years |
| Best fit | Spare M.2 slot | Preserve M.2 slots | Mirrored pair |
| Main caveat | Uses an M.2 slot | Older product family | Not intended for servers, per Kingston |
| Links | Check price for WD Blue SN580 250GB (opens in a new tab) | Check price for Samsung 870 EVO 250GB (opens in a new tab) | Check price for Kingston NV2 250GB (opens in a new tab) |
Our picks in detail
WD Blue SN580 250GB
- Model
- WDS250G3B0E
- Interface
- PCIe 4.0 x4 NVMe, M.2 2280
- Rated endurance
- 150 TBW
- Warranty
- 5 years or endurance limit
- Role
- Dedicated Proxmox boot device
A sensible default when an M.2 slot is genuinely spare. WD rates the 250GB model at 150 TBW with a 5-year warranty, and its 4,000 MB/s read rating is far more than boot duty needs. SanDisk now sells WD's client SSDs and still lists the SN580.
WD's client SSDs are now sold under the SanDisk brand. Verify lifecycle (opens in a new tab)
Pros
Cons
Samsung 870 EVO 250GB
Previous generation- Interface
- 2.5-inch SATA
- Rated endurance
- 150 TBW
- DRAM cache
- 512MB LPDDR4
- Warranty
- 5 years or endurance limit
- Role
- Boot device when a SATA bay is free
Choose SATA to keep M.2 slots free for VM or container storage. Samsung rates the 250GB 870 EVO at 150 TBW with a 5-year warranty and 512MB of DRAM cache. It is an older product family, so check that the capacity you want is still sold.
Older SATA product family; verify small-capacity stock and compare with current alternatives. Verify lifecycle (opens in a new tab)
Pros
Cons
Kingston NV2 250GB
Previous generation- Model
- SNV2S/250G
- Interface
- PCIe 4.0 x4 NVMe, M.2 2280
- Rated speed
- 3,000 / 1,300 MB/s
- Rated endurance
- 80 TBW
- Warranty
- 3 years
Two modest drives in a mirror can keep a host running after one fails, which a single premium drive cannot. Kingston rates the 250GB NV2 at 80 TBW with a 3-year warranty, and its datasheet says the NV2 is designed for desktop and notebook workloads, not server environments. Treat it as a budget compromise.
Previous-generation drive designed for desktop and notebook use; Kingston says it is not intended for server environments. The current NV3 line starts at 500GB. Verify lifecycle (opens in a new tab)
Pros
Cons
A Proxmox boot device has a simple job: start the hypervisor, keep its configuration, and stay easy to replace. It does not need flagship sequential performance. Proxmox VE 9 (Debian 13) is the current release, and VE 8 reached end of life on August 31, 2026, so a boot-drive change is a good time to plan the upgrade.
The WD Blue SN580 is our general recommendation when an M.2 slot is spare. A Samsung 870 EVO is the better layout when using SATA frees an NVMe slot for VM storage.
Slot value matters more than benchmark speed
Many mini PCs have just one or two M.2 slots. Spending one on a lightly used boot partition can halve your best local-storage expansion path, so a 2.5-inch SATA drive may be the better choice even though its rated speed is much lower.
On a server with plenty of NVMe slots and no convenient SATA bay, the opposite is true. Choose the interface that simplifies the whole storage plan.
With ext4 or xfs, the Proxmox installer creates root, data and swap volumes on the install disk, and the data volume is an LVM-thin pool. If you want the boot drive to hold only the OS, plan separate storage for guest disks.
Mirroring and backup solve different problems
A boot mirror, such as the ZFS RAID1 option in the Proxmox installer, keeps the host running after one device fails. It does not protect against accidental configuration changes, file system corruption copied to both members, theft, or failure of the whole machine.
Keep guest backups and enough host configuration to reinstall. A fast recovery plan matters more than buying a premium consumer SSD.
Endurance in context
All three drives here are client SSDs with client-workload endurance ratings: 150 TBW for the SN580 and 870 EVO, and 80 TBW for the NV2. Kingston’s datasheet adds that the NV2 is designed for desktop and notebook workloads and is not intended for server environments. For a busy cluster node or a boot disk that also takes heavy logging, choose a drive with a higher endurance rating.
Do not assign unrelated jobs to spare capacity
ISO storage and a small template cache are low-risk uses of spare space. VM data, write logs and cache devices have different performance and power-loss requirements. Avoid making the boot drive a critical multi-purpose device just because a large partition is empty.
Bottom line
Buy the WD Blue SN580 when an NVMe install is convenient and the slot is truly spare. Use the Samsung 870 EVO when SATA frees better storage options. Consider two modest drives, such as a pair of Kingston NV2 SSDs, instead of one expensive drive when boot-volume availability matters, and keep a recovery path either way.
Frequently Asked Questions
How much space does Proxmox need?
Should I mirror Proxmox boot drives?
Is NVMe faster than SATA for Proxmox boot?
Should the boot SSD also be a ZFS SLOG?
Which Proxmox VE version should I install?
Related Articles
Sources
Product specifications and lifecycle details were checked against these primary sources. Prices and availability can change after the access date.
- Proxmox VE installation documentation (opens in a new tab), accessed September 30, 2026
- WD Blue SN580 NVMe SSD product brief (opens in a new tab), accessed September 29, 2026
- Samsung SSD 870 EVO data sheet (opens in a new tab), accessed September 29, 2026
- Kingston NV2 PCIe 4.0 NVMe SSD data sheet (opens in a new tab), accessed September 29, 2026