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Silver 3.5 inch SAS hard drive with circuit board visible

Seagate

Seagate ST4000NM0125 4 TB 3.5" SAS 7200 RPM 128 MB internal hard drive

SKU CH-E9QJ-7MAWD

A 4 TB 3.5-inch SAS internal hard drive spinning at 7200 RPM with a 128 MB cache

  • InterfaceSAS 12Gb/s
  • Capacity4TB
  • NAND Flash Memory TypeSLC
  • RPM7200 RPM
  • Cache128MB
  • Form Factor3.5"
  • 4 TB capacity stores large datasets
  • 7200 RPM spindle delivers fast sequential throughput
  • 128 MB cache buffers heavy write workloads
  • SAS 12Gb/s interface supports dual-port redundancy
  • 5 inch form factor fits standard drive bays

Enterprise Capacity Drive

The Seagate ST4000NM0125 is a 4TB 3.5-inch internal hard drive built for servers and storage arrays that require the SAS 12Gb/s interface. It spins at 7200 RPM with a 128MB cache to sustain heavy read and write workloads. The SLC NAND flash component supports data integrity features in demanding environments. This drive suits administrators who need high-capacity, enterprise-grade storage on a 12Gb/s SAS fabric.

Not For Direct Desktop Use

Systems without a SAS host bus adapter or backplane cannot connect this drive, so standard PC builders should look elsewhere. Laptop upgrades and small-form-factor enclosures are unsuitable due to the 3.5-inch form factor. Buyers who need a different interface protocol or a smaller physical size must choose another product.

Interface Is SAS 12Gb/s

The single specification that determines compatibility is the SAS 12Gb/s interface, which requires a matching controller or backplane. Without that connection the drive will not function in the target system. Verify the host hardware supports this interface before purchase.

I korthet

  • 4 TB capacity stores large datasets
  • 7200 RPM spindle delivers fast sequential throughput
  • 128 MB cache buffers heavy write workloads
  • SAS 12Gb/s interface supports dual-port redundancy
  • 5 inch form factor fits standard drive bays

Specifikationer

BrandSeagate
ModelST4000NM0125
InterfaceSAS 12Gb/s
Capacity4TB
NAND Flash Memory TypeSLC
RPM7200 RPM
Cache128MB
Form Factor3.5"

Frågor om den här produkten

How much heat and noise does the ST4000NM0125 produce during continuous 7200 RPM operation?

The 3.5-inch drive spins at 7200 RPM with a SAS 12Gb/s interface; sustained enterprise workloads generate typical mechanical-drive heat and audible seek noise.

What host connector and controller does the ST4000NM0125 require to function?

It needs a 12 Gb/s SAS backplane or HBA with a compatible SAS cable; the drive uses a standard SAS data and power connector.

Can the ST4000NM0125 share a SAS backplane with older 6 Gb/s SAS drives?

Yes, the 12 Gb/s SAS interface auto-negotiates down to 6 Gb/s, so the 4 TB drive operates alongside legacy SAS devices on the same domain.

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