Supermicro SuperStorage: dense storage servers
SSG-640SP-E1CR90 is a 4U top-loading storage server with 90 hot-swap 3.5-inch SAS/SATA bays plus four internal NVMe bays on dual Intel Xeon Scalable processors, 2600 W Titanium redundant power and 2x 10GbE networking. SSG-540P-E1CTR45 is the single-socket variant at 45 hot-swap bays with SAS hardware RAID.
Technical specification
| Model | Form factor | Socket / processor generation | Max memory | Drive bays | GPU support | Power supply | Network |
|---|---|---|---|---|---|---|---|
| SSG-640SP-E1CR90 | 4U | 2x Intel Xeon Scalable | Up to 4 TB | 90x 3.5″ SAS/SATA hot-swap + 4x NVMe | – | 2600 W redundant, Titanium | 2x 10GbE RJ45 |
| SSG-540P-E1CTR45 | 4U | 1x Intel Xeon Scalable | – | 45x 3.5″ SAS/SATA hot-swap, SAS HW RAID | – | – | – |
Source of the values: Supermicro SSG-640SP-E1CR90/SSG-540P-E1CTR45 product pages (supermicro.com). SSG-640SP-E1CR90 is documented in full from Supermicro’s own product page; SSG-540P-E1CTR45 was confirmed for form factor, socket count and drive bays only. An en dash means the manufacturer does not publish that value in the source we hold; we do not fill it in with an estimate. Confirm every figure against the current manufacturer document before it is written into a contract.
The codes we quote in this family are SSG-640SP-E1CR90 and SSG-540P-E1CTR45. Send us the workload and the constraints, and we will confirm availability, lead time and the exact configuration.
Which one should you choose?
90 bays in 4U is density that changes the per-drive economics
At 90 hot-swap 3.5-inch bays in a single 4U chassis, SSG-640SP-E1CR90 fits more raw capacity per rack unit than most general-purpose servers with add-on JBODs, which changes the cost-per-TB calculation for a large capacity-tier storage build significantly in its favour.
This is a server, not a turnkey storage array; the software stack is your choice
SSG-640SP-E1CR90 runs standard Xeon processors and needs a software-defined storage stack (Ceph, MinIO, ZFS, or similar) installed and managed; it does not ship with a storage OS or a support contract for that layer the way a turnkey array does. Budget for that software and its administration separately.
Single-socket SSG-540P suits a lighter-compute, higher-density-per-dollar role
SSG-540P-E1CTR45’s single Xeon socket and SAS hardware RAID target archive or backup-tier storage where raw compute matters less than capacity and RAID reliability; a genuinely different role from SSG-640SP-E1CR90’s higher bay count and dual-socket compute headroom.
Internal NVMe bays on SSG-640SP-E1CR90 are for metadata, not bulk capacity
The four internal NVMe bays are the right place for a software-defined storage system’s metadata or journal, kept separate from the 90 bulk SAS/SATA bays for performance reasons; do not plan to use them as general-purpose fast storage for the whole system.
Top-loading access is a real operational detail for a 90-bay chassis
SSG-640SP-E1CR90 is a top-loading design, meaning drives are serviced from above rather than through the front bezel; plan rack placement with enough clearance above the unit to pull the lid, which is a different rack-row layout consideration than a standard front-loading server.
Where it fits, and where it does not
Fits a capacity-tier or archive storage build running a software-defined storage stack, where cost per TB and bay density matter more than raw compute. Does not fit a turnkey storage array requirement; see the Storage group’s array pages; and does not fit a compute-heavy role given the modest processor headroom relative to bay count.
What we need in order to quote it
- Capacity target in TB and drive type (SAS/SATA)
- Software-defined storage stack planned and its metadata/journal needs
- Single or dual socket compute requirement
- Network throughput needed (SSG-640SP-E1CR90 ships with 2x 10GbE)
Request a Quote
Tell us the usable capacity, the protocol and the delivery country. A priced quote comes back within 48 hours, usually with a second option so the trade-off is visible.
