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- Description
- Specifications
P53555-B21 is the HPE 20TB SATA 6G Business Critical 7.2K LFF SC Helium 512e ISE Multi Vendor HDD. It is a 3.5 inch large form factor drive with a 6Gb/s SATA interface, spinning at 7200 rpm, in the SC (Smart Carrier) design. It is a helium-filled drive, and helium drives tend to use less power and run cooler and quieter than air-filled ones.
HPE classes it as a Business Critical drive, the midline tier of its HDD portfolio, aimed at high-capacity storage for backup, archive and reference data. The 512e sector format and the ISE marking are part of the model description.
Performance figures for the 20TB SATA model are an outer-diameter media rate of 249 MiB/s and 128 KiB random read of 110 IOPS, with 118 IOPS at a 70% read and 30% write mix and 130 IOPS at 50% read and 50% write. Power is 5.8 W idle.
The DL380 Gen10 supports it among its midline 6G SATA LFF drives, next to P23857-B21 (16TB), 881785-B21 (12TB) and 819203-B21 (8TB). The SAS version of the same capacity is P53552-B21, and P53553-B21 is the 20TB SAS drive in the low-profile carrier.
The spare number for this drive is P54679-001. More hard drives are in HPE server hard drives.
| Part number | P53555-B21 |
| Capacity | 20 TB |
| Interface | SATA 6Gb/s |
| Form factor | LFF (3.5 in) |
| Rotational speed | 7200 rpm |
| Class | Business Critical (midline) |
| Carrier | SC |
| Sector size | 512e |
| Helium | yes |
| Outer-diameter media rate | 249 MiB/s |
| 128 KiB random read | 110 IOPS |
| Idle power | 5.8 W |