[ INDIVIDUAL COMPONENT // ENTERPRISE SAS SOLID-STATE DRIVE ]
WD Ultrastar DC SS540 15.36 TB (WUSTVA1A1BSS200)
Model-specific catalog record for full manufacturer SKU WUSTVA1A1BSS200. Rated endurance and performance below are manufacturer figures; configured host, firmware, workload and cooling affect results.
IDENTIFICATION: Match the complete SKU WUSTVA1A1BSS200, capacity and label before installation. This is a SAS product, not a SATA SSD. Some units are OEM-rebranded (e.g. Dell/SanDisk labels); the underlying drive is the same Ultrastar DC SS540 family.
Specifications
| Manufacturer / model | Western Digital Ultrastar DC SS540 |
|---|---|
| Full SKU / option | WUSTVA1A1BSS200 — 1 DWPD read-intensive variant. |
| Interface / protocol | Dual-port 12 Gb/s SAS (SAS-3); SAS protocol, not SATA or NVMe. |
| Capacity / form factor | 15.36 TB formatted capacity; 2.5-inch SFF, 15 mm height. |
| NAND / endurance class | 96-layer 3D TLC NAND; read-intensive class, rated 1 DWPD over a 5-year warranty period. Manufacturer-published lifetime writes are capacity-specific; a lifetime rating is not a promise of field life. |
| Performance | Manufacturer states up to roughly 2.13 GB/s sequential read and up to 470,000 random-read IOPS on a 12 Gb/s dual-port link. This is a family ceiling, not a per-drive benchmark; throughput and latency vary with SKU, queue depth, workload, link and host settings. |
| Power-loss protection / power | Manufacturer lists power-loss protection and end-to-end data protection. The product brief gives input-rail and operating-power tables by capacity; use the matching datasheet table for enclosure thermal and power budgets. |
| Host compatibility | Requires a SAS HBA/controller and SAS-capable backplane/cabling; dual-port operation depends on host topology. A SATA-only host/controller cannot speak SAS. Check server/OEM firmware qualification, connector/caddy clearance for 15 mm height, sector format and supported capacities before deployment. |
Compatibility & service notes
- Use a SAS controller and backplane; don't infer support from physical similarity to a SATA 2.5-inch drive.
- For SED/FIPS variants, encryption provisioning, key management and sanitize behavior depend on the controller, operating system and security policy; retain required keys before service.
- Confirm dual-port cabling, link negotiation, capacity and firmware support with the server or storage-array vendor. OEM firmware may differ from retail firmware.
- Record label, firmware, host/controller, date and SMART/health snapshot. Keep verified backups and periodic integrity checks.
Manufacturer datasheets & manual
- WD Ultrastar DC SS540 SAS SSD product briefWestern Digital manufacturer product page; consult the datasheet download for exact SKU and capacity rows.
- Western Digital enterprise storage supportManufacturer support/downloads landing page for firmware and documentation.