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Silver 2.5-inch enterprise hard drive, bare circuit board visible on underside

Hitachi, Ltd.

Hitachi, Ltd. HGST Ultrastar C10K1800 1.2TB 10520 RPM SAS 12Gb/s 2.5" 128MB 512n ISE

SKU CH-SPAB-9PEJT

Enterprise 2.5" SAS drive delivers 1.2TB at 10520 RPM with 128MB cache and Instant Secure Erase

  • Total capacity1.2 TB
  • Interface typeSAS 12Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Rotational speed10,520 RPM
  • Cache memory128 MB Cache
  • 2 TB capacity stores 50 % more data than earlier 10K RPM drives
  • 10520 RPM and 128 MB cache deliver 2.5× faster random writes
  • SAS 12 Gb/s interface moves data quickly and reliably
  • Advanced power management optimises consumption for 24×7 enterprise workloads
  • Instant Secure Erase with 512 n sectors simplifies secure drive retirement

Enterprise Storage Drive

The HGST Ultrastar C10K1800 is a 1.2TB 2.5-inch hard drive built for enterprise storage arrays and high-performance servers. Its 10520 RPM spindle speed and 128MB cache target Tier 1 applications such as databases, OLTP and HPC workloads that demand 24x7 availability. The SAS 12Gb/s interface and 512n Instant Secure Erase suit environments where data security and rapid drive retirement are required.

Thermals and Power

Advanced Power Management optimizes power consumption during normal operation, delivering best-in-class power efficiency for space-constrained racks. The 10520 RPM mechanism is engineered for sustained throughput while keeping thermal output controlled within enterprise chassis airflow designs. A 2M hour MTBF rating reflects the reliability expectations for continuous duty cycles in mission-critical deployments.

Build Integration

The 2.5-inch form factor fits high-density drive bays and hot-swap backplanes using the SAS 12Gb/s connection. 512n sector formatting ensures compatibility with legacy enterprise controllers and operating systems without translation overhead. Instant Secure Erase simplifies decommissioning by removing data instantly, freeing administrators from lengthy overwrite procedures when drives leave the secure environment.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $60.99
Cheaper than about 69% of the 4,938 comparable items (median $107.99).
Total capacity 1.2 TB
Lower than about 58% of the 2,372 comparable items (median 2 TB).
Price per TB $50.83 per TB
Cheaper than about 60% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHGST
Product lineUltrastar C10K1800
Model nameHUC101812CSS200 0B28807
Total capacity1.2 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed10,520 RPM
Storage
Cache memory128 MB Cache
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor2.5 in (6.35 cm)

Questions about this item

How do I install this 2.5" SAS drive in a server bay and what step is often missed?

Mount the 2.5" drive in a compatible SAS backplane or tray, connect the SAS 12Gb/s data and power cables, then enable the drive in the RAID controller BIOS so the 1.2TB volume appears to the OS.

What maintenance or replacement will this enterprise drive need during its service life?

With a 2M hour MTBF rating and Instant Secure Erase, the drive itself needs no scheduled maintenance; plan replacement only if SMART attributes flag degradation or when capacity must expand beyond 1.2TB.

What limit appears first when this 10520 RPM drive runs sustained workloads?

The 12Gb/s SAS interface and 128MB cache sustain high throughput, so the mechanical 10520 RPM rotational latency becomes the first bottleneck during continuous random I/O.

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