Seagate ST4000NM004A 3.5" 4TB SAS 12Gb/s 7200 RPM 256MB rackmount NAS
- 4 TB
- SAS 12Gb/s
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2U short-depth rackmount NAS with an Intel Atom C5125 8-core 2.8 GHz processor, eight drive bays and redundant power supply
The TS-855eU-RP is a 2U short-depth rackmount enclosure designed for network-attached storage or iSCSI IP-SAN deployment. It targets businesses that need centralised file sharing and backup in offices or audiovisual rooms where rack space is limited. The Intel Atom C5125 8-core processor running at 2.8 GHz delivers the compute headroom for concurrent access and efficient restoration workflows.
The single specification that determines suitability is the Intel Atom C5125 8-core CPU clocked at 2.8 GHz. This processor governs throughput for file protocols, virtualization tasks and snapshot operations across all eight drive bays. Buyers who need higher single-thread performance or hardware transcoding engines should evaluate platforms with different CPU architectures.
A redundant PSU is included, keeping the system online if one power module fails or a feed is lost. This hardware redundancy protects data availability during maintenance or unexpected outages without requiring external UPS coordination for the power supply itself. The bundle adds no extra software licences or drive carriers beyond the standard enclosure package.
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| Size & build | |
|---|---|
| Shipping weight | 14.52 kg |
| Package size | 584 × 533 × 216 mm |
The eight cores at 2.8 GHz give each VM dedicated threads, so concurrent workloads such as file serving, backup jobs and light databases run side by side without starving each other.
The unit connects via standard Gigabit Ethernet ports, so iSCSI block traffic is capped at roughly 1 Gbps per link unless link aggregation or a faster switch is added.
The chassis fits a standard 2U rack slot and its short-depth design allows installation in cabinets with limited front-to-back clearance.
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