WESTERN DIGITAL

Western digital ultrastar dc hc555 0b48722 16TB data center HDD 3.5" sata 6GB/s 7200rpm 512mb cmr

Name: Western digital ultrastar dc hc555 0b48722 16TB data center HDD 3.5" sata 6GB/s 7200rpm 512mb cmr
Brand: WESTERN DIGITAL
SKU: f478aacc-d928-4b2d-b0f5-176fa6d96d99
Price: 1195.91 EUR
Availability: InStock

€ 1,195.91

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WD Ultrastar DC HC555 0B48722 — 16TB Data Center HDD 16TBSATA 6GB/s7200 RPMePMR CMR The Western Digital Ultrastar DC HC555 0B48722 is a 16TB data-center-class 3.5-inch SATA hard drive built for high-intensity 24/7 storage. Its helium-sealed ePMR CMR platform with OptiNAND spins at 7200 RPM with a 512 MB cache over SATA 6GB/s. Identified by part number 0B48722 (EAN 0829686009493), it is rated for 550TB/year workloads and a 2.5-million-hour MTBF. Typically in stock with fast delivery across

Χαρακτηριστικά

Γενικά Χαρακτηριστικά Σκληρού Δίσκου

Τύπος Δίσκου: SATA
Χωρητικότητα Αποθήκευσης: 16 TB
Form Factor: 3.5-inch

Λεπτομέρειες

WD Ultrastar DC HC555 0B48722 — 16TB Data Center HDD

16TBSATA 6GB/s7200 RPMePMR CMR

The Western Digital Ultrastar DC HC555 0B48722 is a 16TB data-center-class 3.5-inch SATA hard drive built for high-intensity 24/7 storage. Its helium-sealed ePMR CMR platform with OptiNAND spins at 7200 RPM with a 512 MB cache over SATA 6GB/s. Identified by part number 0B48722 (EAN 0829686009493), it is rated for 550TB/year workloads and a 2.5-million-hour MTBF. Typically in stock with fast delivery across Cyprus.

Compatibility & Setup

This is a bare internal 3.5-inch SATA drive — install it in a free 3.5-inch bay with a SATA data and power connection. It suits servers, RAID controllers and data-centre chassis that support 16TB SATA drives. No mounting screws, cables or backplane are included, and the drive ships unformatted for initialisation in your host system.

Best For

✓Enterprise and hyperscale data centres

✓Servers and RAID/JBOD arrays

✓24/7 high-intensity multi-user storage

✓Backup, archival and content repositories

✓File and object storage solutions

✓Dense multi-bay high-capacity chassis

Key Features

ePMR CMR recording

Energy-assisted perpendicular magnetic recording (ePMR) improves write consistency and areal density while keeping standard CMR compatibility — no SMR write penalty.

OptiNAND + ArmorCache

Embedded iNAND flash stores drive metadata for higher density and data protection, while ArmorCache safeguards the write cache during unexpected power loss.

Helium-sealed platform

A helium-sealed build lowers internal friction and power draw for reliable high-capacity operation in dense arrays.

Data-center reliability

Rated for 550TB/year workloads and a 2.5-million-hour MTBF, backed by a 5-year limited warranty for continuous 24/7 duty.

Technical Specifications

Identification
Brand	Western Digital
Series	Ultrastar DC HC555
Part Number	0B48722
EAN / GTIN	0829686009493
MPN	0B48722
Capacity & Format
Capacity	16TB
Form Factor	3.5-inch internal
Recording	CMR via ePMR — energy-assisted perpendicular magnetic recording
Platform	Helium-sealed
Sector Format	512e — 512-byte emulated
Interface & Performance
Interface	SATA 6GB/s
Rotational Speed	7200 RPM
Cache	512 MB
Sustained Transfer	Up to 269 MB/s
Enhancements	OptiNAND, ArmorCache
Reliability
MTBF	2,500,000 hours
Rated Workload	550TB/year
Non-recoverable Errors	1 in 10^15 bits read
Load/Unload Cycles	600,000
Warranty	5-year limited
Power & Physical
Read/Write Power	~6.5 W (typical)
Idle Power	~5.0 W (typical)
Dimensions (L×W×H)	147 × 101.85 × 26.1 mm
Weight	~665 g
Operating Temp	5–60 °C

Frequently Asked Questions

Is the HC555 0B48722 SATA or SAS?

This part number (0B48722) is the SATA 6GB/s model — it drops into standard SATA ports on servers, NAS and RAID controllers that support 16TB drives. A separate SAS version exists under a different part number.

Is the HC555 a CMR or SMR drive?

It uses CMR (conventional magnetic recording) with ePMR, so it delivers consistent write performance and full RAID compatibility — unlike SMR drives, which can slow under sustained writes.

Does it work in a NAS or server?

Yes. It is a SATA 6GB/s data-centre drive for servers, NAS and RAID arrays. Confirm your system supports 16TB drives and has a free 3.5-inch bay with a SATA data and power connector.

What do I need to know before buying?

It is a bare internal 3.5-inch SATA drive with no mounting kit or cables, and it ships unformatted for initialisation in your host. Typically in stock with fast delivery across Cyprus.

Singular Expert Insight

The Ultrastar DC HC555 is Western Digital’s current-generation data-centre drive, using ePMR and OptiNAND for dependable 24/7 performance. At 16TB it is a strong mainstream capacity for servers and NAS, sitting below the higher-density HC570/HC580. Building out an array? Pair it with matching drives from our enterprise/server HDD range. For latency-critical tiers, an enterprise SSD is the complement.

Buyer’s Guide

Buy it if

You need 16TB of CMR capacity per bay for a server or NAS

You run 24/7 workloads of up to 550TB/year

You want data-centre reliability and a 5-year warranty

Skip it if

You only need occasional desktop backup — a WD Blue or Red costs less

You need higher capacity — see HC570 22TB / HC580 24TB

You need sub-millisecond latency — choose an enterprise SSD

Also consider

WD Ultrastar DC HC555 20TB (0B48724) for more capacity

WD Gold 22TB for a server/NAS alternative

Seagate Exos X18 16TB as an alternative