We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in

Western Digital

Western Digital Ultrastar DC HC550 18TB 7200RPM SAS 12Gb/s 512MB Cache 3.5-inch internal hard drive

SKU CH-Z8J7-N2A00

High-capacity 3.5-inch drive holds 18 TB with 7200 RPM speed and 512 MB cache over SAS 12 Gb/s

  • Massive 18TB capacity stores vast datasets
  • 7200RPM spindle delivers consistent throughput
  • 12Gb/s SAS interface enables fast data transfer
  • 512MB cache accelerates frequent read operations

Ultrastar DC HC550 18TB enterprise drive

The Western Digital Ultrastar DC HC550 is an 18TB 3.5-inch internal hard drive built for data-centre workloads. It spins at 7200RPM and uses a SAS 12Gb/s interface with a 512MB cache to handle sustained read and write demands.

SAS 12Gb/s interface practical limits

The SAS 12Gb/s link tops out at 12Gb/s, so throughput cannot exceed that ceiling regardless of drive speed. Workloads needing higher bandwidth or lower latency than SAS provides will require a different interface.

Highlights

  • Massive 18TB capacity stores vast datasets
  • 7200RPM spindle delivers consistent throughput
  • 12Gb/s SAS interface enables fast data transfer
  • 512MB cache accelerates frequent read operations

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 18TB model or a smaller capacity for my storage array?

The 18TB capacity suits high-density arrays where rack space is limited; pick a smaller drive only if your workload does not need that much raw space.

What does the 7200RPM speed mean for daily throughput on a SAS 12Gb/s link?

7200RPM delivers sustained sequential rates that saturate the SAS 12Gb/s bus during large transfers, while random I/O depends on queue depth and the 512MB cache.

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.