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3.5 inch silver aluminium hard drive with green circuit board

Seagate

Seagate Exos X24 ST20000NM002H# 20TB 3.5" internal hard drive SATA 7200rpm

SKU CH-3FZF-J6YRB MPN ST20000NM002H#

Enterprise 3.5" SATA hard drive delivering 20TB at 7200rpm with 285MB/s transfer rates and a 550TB/year workload rating

  • InterfaceSATA 6.0Gb/s
  • Capacity20TB
  • RPM7200 RPM
  • Enterprise capacity with 20TB on a single 3.5" drive
  • Sustained throughput up to 285MB/s for demanding workloads
  • 550TB/year workload rating for continuous operation
  • 5M-hour MTBF for long-term reliability
  • Helium-sealed design enables high density and efficiency

20 TB SATA enterprise drive

The Seagate Exos X24 ST20000NM002H# is a 20 TB 3.5-inch internal hard drive built for continuous operation in servers and storage arrays. It spins at 7200 RPM on a SATA 6.0 Gb/s interface and uses a helium-sealed design with conventional magnetic recording. The drive is rated for a 550 TB per year workload and a 2.5 million-hour MTBF.

Suited for high-capacity bulk storage

This drive fits administrators who need maximum capacity per bay for archival, backup or cold-data tiers where sequential throughput matters more than random IOPS. It is not suited for workloads that demand low-latency random access or the throughput of a solid-state device. Buyers who need faster access times or a smaller form factor should consider a different storage class.

285 MB/s sustained transfer rate

The headline sequential speed reaches 285 MB/s, which determines whether the drive can feed your RAID controller or backup window fast enough. If your application requires higher sustained bandwidth, this model will not meet that threshold.

Points forts

  • Enterprise capacity with 20TB on a single 3.5" drive
  • Sustained throughput up to 285MB/s for demanding workloads
  • 550TB/year workload rating for continuous operation
  • 5M-hour MTBF for long-term reliability
  • Helium-sealed design enables high density and efficiency

Caractéristiques

BrandSeagate
InterfaceSATA 6.0Gb/s
Capacity20TB
RPM7200 RPM
Poids d’expédition0.91 kg
Dimensions du colis25 × 25 × 25 mm

Questions sur cet article

How is the 3.5" SATA drive installed, and which step is often missed?

Mount the drive in a 3.5" bay, connect the SATA 6.0Gb/s data cable and a SATA power connector, then enable hot-plug support in the system BIOS so the drive can be added or removed without a reboot.

What maintenance or replacement will the helium-sealed 20TB drive need later?

The helium-sealed design requires no internal maintenance; plan replacement after the 550TB per year workload rating or the 2.5M-hour MTBF is reached, and use Seagate Instant Secure Erase before decommissioning.

What limit appears first during sustained transfers on the 7200rpm CMR drive?

The sustained data transfer rate peaks at 285MB/s, so the interface throughput ceiling is reached before the 6.0Gb/s SATA link saturates.

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