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Seagate exos m st30000nm004k 30TB enterprise HDD 3.5" sata 6GB/s 7200rpm 512mb cmr hamr

Product image: Seagate exos m st30000nm004k 30TB enterprise HDD 3.5" sata 6GB/s 7200rpm 512mb cmr hamr-null
Product image: Seagate exos m st30000nm004k 30TB enterprise HDD 3.5" sata 6GB/s 7200rpm 512mb cmr hamr-null
Product image: Seagate exos m st30000nm004k 30TB enterprise HDD 3.5" sata 6GB/s 7200rpm 512mb cmr hamr-null
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Seagate exos m st30000nm004k 30TB enterprise HDD 3.5" sata 6GB/s 7200rpm 512mb cmr hamr

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Description

Item No. 8f841995-b8e9-4513-a123-a373fa7455c3
Seagate Exos M ST30000NM004K — 30TB Enterprise SATA HDD 30TBSATA 6GB/sMozaic 3+ HAMRCMR · 512 MB The Seagate Exos M ST30000NM004K is a 30TB enterprise-class 3.5-inch SATA hard drive built on Seagate’s Mozaic 3+ areal-density platform, delivering one of the highest capacities available in a standard drive bay. Its helium-sealed CMR design spins at 7200 RPM with a 512 MB multisegment cache over SATA 6GB/s. Identified by part number ST30000NM004K (EAN 8719706437295), it is rated for 550TB/yea

Attributes

Hdd General Characteristics

  • Disk Type: SATA
  • Storage Capacity: 30 TB

Details

Seagate Exos M ST30000NM004K — 30TB Enterprise SATA HDD

30TBSATA 6GB/sMozaic 3+ HAMRCMR · 512 MB

The Seagate Exos M ST30000NM004K is a 30TB enterprise-class 3.5-inch SATA hard drive built on Seagate’s Mozaic 3+ areal-density platform, delivering one of the highest capacities available in a standard drive bay. Its helium-sealed CMR design spins at 7200 RPM with a 512 MB multisegment cache over SATA 6GB/s. Identified by part number ST30000NM004K (EAN 8719706437295), it is rated for 550TB/year workloads and a 2.5-million-hour MTBF for continuous hyperscale storage. 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. Because 30TB is a very high capacity, confirm your server, NAS or RAID controller and its firmware support drives of this size and use a modern 64-bit OS with GPT partitioning. No mounting screws, cables or backplane are included, and the drive ships unformatted for initialisation in your host system.

Best For

✓Hyperscale and cloud data centres
✓Enterprise servers and RAID/JBOD arrays
✓Maximum capacity per rack unit
✓24/7 high-capacity bulk and cold storage
✓Backup, archival and content repositories
✓Dense multi-bay storage build-outs

Key Features

 
Mozaic 3+ HAMR platform
Seagate’s Mozaic 3+ areal-density platform uses HAMR (Heat-Assisted Magnetic Recording) to pack more than 3TB per platter, reaching 30TB in a standard 3.5-inch form factor for unmatched density per bay.
 
CMR, not SMR
Despite the advanced HAMR media, the drive presents as a standard CMR (conventional magnetic recording) device with no shingled-write penalty — keeping full RAID, OS and application compatibility.
 
Helium enterprise reliability
A helium-sealed build with a 2.5-million-hour MTBF, 0.35% annualised failure rate and 550TB/year workload rating is engineered for 24/7 continuous hyperscale operation.
 
5-year limited warranty
Backed by a 5-year limited warranty for data-centre-grade assurance in mission-critical, always-on deployments.

Technical Specifications

Identification
Brand Seagate
Series Exos M
Part Number ST30000NM004K
EAN / GTIN 8719706437295
MPN ST30000NM004K
Capacity & Format
Capacity 30TB
Form Factor 3.5-inch internal
Recording CMR via Mozaic 3+ HAMR — Heat-Assisted Magnetic Recording
Platform Helium-sealed
Sector Format 512e — 512-byte emulated
Interface & Performance
Interface SATA 6GB/s
Rotational Speed 7200 RPM
Cache 512 MB multisegment
Average Latency 4.16 ms
Sustained Transfer Up to 275 MB/s
Reliability
MTBF 2,500,000 hours
Rated Workload 550TB/year
Annualised Failure Rate 0.35%
Non-recoverable Errors 1 in 10^15 bits read
Warranty 5-year limited
Power & Physical
Read/Write Power ~9.4 W (typical)
Idle Power ~6.0 W (typical)
Dimensions (L×W×H) 147 × 101.85 × 26.11 mm
Weight ~700 g
Operating Temp 5–60 °C

Frequently Asked Questions

What is Mozaic 3+ and HAMR on the Exos M?
Mozaic 3+ is Seagate’s next-generation platform that uses HAMR (Heat-Assisted Magnetic Recording) to write more data onto each platter — over 3TB per disk. This is how the Exos M reaches 30TB in a standard 3.5-inch drive while behaving like a normal CMR HDD.
Is the Exos M a CMR or SMR drive?
It is a CMR (conventional magnetic recording) drive. HAMR is a media and write-head technology, not shingled recording, so there is no SMR write-amplification penalty and it stays fully compatible with RAID and standard operating systems.
Does the 30TB Exos M work in a NAS or server?
Yes, over SATA 6GB/s. Because of the very high capacity, confirm your NAS, server or RAID controller and firmware support 30TB drives, and use a 64-bit OS with GPT partitioning.
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 Exos M is Seagate’s density leader: by moving to the Mozaic 3+ HAMR platform it pushes a single 3.5-inch bay to 30TB — more than the 24TB Exos X24 or WD Ultrastar HC580, so you fit more petabytes per rack. Choose it when maximum capacity per bay and lowest cost-per-terabyte at scale matter most; for smaller arrays a 22–24TB drive may be more economical per unit. Scaling out? 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 maximum 30TB capacity per bay for a server or NAS
You run 24/7 hyperscale workloads up to 550TB/year
You want the lowest cost-per-terabyte at scale with a 5-year warranty
Skip it if
Your controller or OS cannot address 30TB drives
You need only modest capacity — a smaller Exos costs less per unit
You need sub-millisecond latency — choose an enterprise SSD
Also consider
Seagate Exos X24 24TB for proven high capacity
WD Ultrastar DC HC590 26TB as an alternative
WD Gold 22TB for a lower price per drive