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Western Digital
Western Digital WDS400T1R0A Red SA500 4TB 2.5" SATA internal SSD
4TB 2.5" SATA SSD with 3D NAND, up to 560 MBps read and 530 MBps write, 2500 TBW endurance for NAS caching
- Device TypeInternal Solid State Drive (SSD)
- Used ForConsumer
- Form Factor2.5"
- Capacity4TB
- Memory Components3D NAND
- InterfaceSATA III
- Optimised for NAS caching to accelerate frequent file access using 3D NAND
- High endurance handles heavy NAS workloads with 2500TB written rating
- Sequential read up to 560 MBps speeds data transfer for large media files
- Sequential write up to 530 MBps supports 4K and 8K video editing workflows
- 5 inch form factor fits standard NAS drive bays with SATA III interface
NAS caching SSD for 24/7 workloads
The Western Digital Red SA500 is a 2.5-inch SATA internal SSD built for NAS caching. It uses 3D NAND to accelerate access to frequently used files in home and business systems. The drive targets multi-user environments, databases, and media editing workloads that demand consistent responsiveness. Its 4TB capacity fits high-density NAS slots.
Thermals noise and power in daily use
The drive operates between 0°C and 70°C and survives storage from -55°C to 85°C. Active power peaks at 3,800 mW during writes and 3,000 mW during reads, while average active draw is 60 mW. Idle slumber consumption is 56 mW and DEVSLP drops to 5-12 mW. With no moving parts the drive runs silently in a 24/7 enclosure.
Endurance rating for heavy write loads
The drive is rated for 2500 TBW and an MTTF of up to 2M hours. Sequential speeds reach 560 MBps read and 530 MBps write. Random performance hits 95,000 IOPS read and 82,000 IOPS write. These figures define whether the SSD can sustain the write intensity of your NAS cache tier.
Besonderheiten
- Optimised for NAS caching to accelerate frequent file access using 3D NAND
- High endurance handles heavy NAS workloads with 2500TB written rating
- Sequential read up to 560 MBps speeds data transfer for large media files
- Sequential write up to 530 MBps supports 4K and 8K video editing workflows
- 5 inch form factor fits standard NAS drive bays with SATA III interface
Technische Daten
| Brand | Western Digital |
|---|---|
| Series | Red SA500 |
| Model | WDS400T1R0A |
| Device Type | Internal Solid State Drive (SSD) |
| Used For | Consumer |
| Form Factor | 2.5" |
| Capacity | 4TB |
| Memory Components | 3D NAND |
| Interface | SATA III |
| Max Sequential Read | Up to 560 MBps |
| Max Sequential Write | Up to 530 MBps |
| 4KB Random Read | Up to 95,000 IOPS |
| 4KB Random Write | Up to 82,000 IOPS |
| Terabytes Written (TBW) | 2500TB |
| MTTF | Up to 2M hours |
| Features | Storage optimized for caching in NAS systems to rapidly access your most frequently used files. Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment. Purpose-built for NAS with proven Western Digital 3D NAND to deliver maximum SATA performance to both home and business users. Reduces latency and improves responsiveness for OLTP databases, multi-user environments, photo rendering, 4K and 8K video editing, and more. Available in 2.5" and M.2 form factors to fit the slots in modern NAS systems. Capacities |
| Power Consumption (Idle) | Slumber (mW): 56 DEVSLP (mW): 5-12 |
| Power Consumption (Active) | Average Active Power (mW): 60 Max Read Operating (mW): 3,000 Max Write Operating (mW): 3,800 |
| Operating Temperature | 0°C ~ +70°C |
| Storage Temperature | -55°C ~ +85°C |
| Max Shock Resistance | 1,500G @ 0.5 msec half sine |
| Max Vibration Resistance | Operating: 5.0 gRMS, 10-2000 Hz Non-operating: 4.9 gRMS, 7-800 Hz |
| Height | 7.00mm |
| Width | 69.85mm |
| Depth | 100.20mm |
| Weight | 57.90g |
| Versandgewicht | 0.08 kg |
| Paketgröße | 128 × 99 × 22 mm |
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Will this 2.5" drive fit the drive bays in my Synology or QNAP NAS?
The drive uses the standard 2.5" SATA form factor, so it fits any NAS bay or caddy that accepts 2.5" SATA drives.
Can I use this SSD as a read/write cache for my NAS volume?
Yes, the drive is optimised for NAS caching workloads and its 2500 TBW endurance rating supports continuous read/write cycles.
What sequential speeds should I expect over a SATA III link?
Up to 560 MBps read and 530 MBps write, limited by the SATA III interface maximum.
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