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HGST HUS726040ALE610 4 TB failure rate and reliability
– Not graded: too little data
Backblaze logged 53 drive-years on the HGST HUS726040ALE610 from Q1 2023 to Q3 2026. In that time 0 drives failed, an annualised failure rate of 0.00%.
That is too little running time to grade: we require 100,000 drive-days, and this model has 19,404. Treat the rate as a rough indication only.
Backblaze no longer runs this model, so these figures are historical.
- Failure rate / year
- 0.00%
- Average, all drives
- 1.52%
- Drives in use
- 0
- Drive-years
- 53
- Failures
- 0
- Capacity
- 4 TB
- Type
- HDD
- Model number
- HUS726040ALE610
Failure rate by quarter
| Quarter | Drive-days | Failures | Failure rate / year |
|---|---|---|---|
| Q1 2023 | 3,688 | 0 | 0.00% |
| Q2 2023 | 3,401 | 0 | 0.00% |
| Q3 2023 | 3,378 | 0 | 0.00% |
| Q4 2023 | 2,906 | 0 | 0.00% |
| Q1 2024 | 2,402 | 0 | 0.00% |
| Q2 2024 | 1,495 | 0 | 0.00% |
| Q3 2024 | 1,084 | 0 | 0.00% |
| Q4 2024 | 552 | 0 | 0.00% |
| Q1 2025 | 498 | 0 | 0.00% |
Single quarters with few drive-days swing widely; the overall figure above is the dependable one.
All 4 TB hard drives compared
| Grade | Model | Type | Size | Failure rate / year | Drives in use | Drive-years | Failures |
|---|---|---|---|---|---|---|---|
| A | HGST HMS5C4040BLE640 | HDD | 4 TB | 0.32% | 0 (retired) | 21,067 | 67 |
| A | HGST HMS5C4040ALE640 | HDD | 4 TB | 0.38% | 0 (retired) | 4,207 | 16 |
| D | Seagate ST4000DM000 | HDD | 4 TB | 3.46% | 0 (retired) | 20,249 | 701 |
| – | Toshiba MD04ABA400V | HDD | 4 TB | 1.04% | 0 (retired) | 96 | 1 |
| – | HGST HUS726040ALE610 | HDD | 4 TB | 0.00% | 0 (retired) | 53 | 0 |
| – | Seagate ST4000DM005 | HDD | 4 TB | 5.27% | 0 (retired) | 38 | 2 |