Quarterly Reports
Every reporting period Backblaze has published Drive Stats for, back to 2013.
Q2 2017
54 model(s) reported this period.
Brand
Capacity
| Brand | Model | Capacity | Drive Count | Drive Days | Failures | AFR |
|---|---|---|---|---|---|---|
| Hitachi | HDS722020ALA330 | 2 TB | 63 | 438 | 0 | 0.00% |
| WD | WD1600BPVT | 160 GB | 1 | 91 | 0 | 0.00% |
| Seagate | ST9250315AS | 250 GB | 51 | 4,636 | 0 | 0.00% |
| Seagate | ST9320325AS | 320 GB | 23 | 2,065 | 0 | 0.00% |
| WD | WD3200AAJS | 320 GB | 3 | 273 | 0 | 0.00% |
| Seagate | ST3160316AS | 160 GB | 41 | 2,296 | 0 | 0.00% |
| WD | WD2500BPVT | 250 GB | 8 | 685 | 0 | 0.00% |
| WD | WD2500AAJS | 250 GB | 3 | 273 | 0 | 0.00% |
| WD | WD2500BEVT | 250 GB | 1 | 11 | 0 | 0.00% |
| WD | WD5003ABYX | 500 GB | 2 | 130 | 0 | 0.00% |
| Hitachi | HDT725025VLA380 | 250 GB | 1 | 21 | 0 | 0.00% |
| WD | WD3200AAKS | 320 GB | 1 | 40 | 0 | 0.00% |
| WD | WD40EFRX | 4 TB | 46 | 4,186 | 0 | 0.00% |
| WD | WD20EFRX | 2 TB | 45 | 405 | 0 | 0.00% |
| WD | WD3200BEKX | 320 GB | 9 | 819 | 0 | 0.00% |
| WD | WD60EFRX | 6 TB | 443 | 40,313 | 0 | 0.00% |
| Toshiba | MD04ABA500V | 5 TB | 45 | 4,095 | 0 | 0.00% |
| Toshiba | MD04ABA400V | 4 TB | 146 | 13,286 | 0 | 0.00% |
| Seagate | ST4000DX002 | 4 TB | 3 | 273 | 0 | 0.00% |
| Seagate | ST6000DM001 | 6 TB | 9 | 672 | 0 | 0.00% |
| HGST | HUH728080ALE600 | 8 TB | 45 | 4,095 | 0 | 0.00% |
| Toshiba | MQ01ABF050M | 500 GB | 73 | 4,047 | 0 | 0.00% |
| WD | WD5000LPCX | 500 GB | 56 | 4,994 | 0 | 0.00% |
| Seagate | ST1000LM024 HN | 1 TB | 1 | 91 | 0 | 0.00% |
| Seagate | ST31500541AS | 2 TB | 41 | 3,526 | 0 | 0.00% |
| Hitachi | HDS723030ALA640 | 3 TB | 974 | 31,626 | 0 | 0.00% |
| Seagate | ST33000651AS | 3 TB | 1 | 86 | 0 | 0.00% |
| Toshiba | DT01ACA300 | 3 TB | 46 | 3,807 | 0 | 0.00% |
| Hitachi | HDS723030BLE640 | 3 TB | 9 | 683 | 0 | 0.00% |
| Hitachi | HDS5C3030BLE630 | 3 TB | 1 | 26 | 0 | 0.00% |
| HGST | HDS724040ALE640 | 4 TB | 43 | 3,913 | 0 | 0.00% |
| Seagate | ST320LT007 | 320 GB | 9 | 819 | 0 | 0.00% |
| WD | WD1600AAJS | 160 GB | 82 | 6,465 | 0 | 0.00% |
| Seagate | ST3160318AS | 160 GB | 14 | 932 | 0 | 0.00% |
| WD | WD3200LPVX | 320 GB | 1 | 91 | 0 | 0.00% |
| Hitachi | HDS5C4040ALE630 | 4 TB | 2,731 | 247,923 | 2 | 0.29% |
| HGST | HMS5C4040ALE640 | 4 TB | 8,577 | 776,072 | 7 | 0.33% |
| Hitachi | HDS5C3030ALA630 | 3 TB | 4,380 | 255,180 | 3 | 0.43% |
| HGST | HMS5C4040BLE640 | 4 TB | 16,189 | 1,405,418 | 21 | 0.55% |
| Seagate | ST8000DM002 | 8 TB | 9,894 | 897,916 | 24 | 0.98% |
| WD | WD30EFRX | 3 TB | 1,030 | 60,414 | 2 | 1.21% |
| Seagate | ST6000DX000 | 6 TB | 1,891 | 171,677 | 7 | 1.49% |
| Seagate | ST8000NM0055 | 8 TB | 6,068 | 330,217 | 14 | 1.55% |
| Toshiba | MQ01ABF050 | 500 GB | 277 | 23,206 | 1 | 1.57% |
| Seagate | ST500LM012 HN | 500 GB | 788 | 70,176 | 6 | 3.12% |
| Seagate | ST4000DM000 | 4 TB | 34,692 | 3,134,401 | 279 | 3.25% |
| WD | WD5000LPVX | 500 GB | 337 | 29,717 | 4 | 4.91% |
| Seagate | ST250LM004 HN | 250 GB | 31 | 2,572 | 1 | 14.19% |
| WD | WD5000BPKT | 500 GB | 24 | 1,966 | 1 | 18.57% |
| Seagate | ST4000DM001 | 4 TB | 405 | 5,998 | 5 | 30.43% |
| Seagate | ST4000DX000 | 4 TB | 170 | 15,023 | 13 | 31.59% |
| WD | WD5002ABYS | 500 GB | 3 | 265 | 1 | 137.74% |
| HGST | HUS726040ALE610 | 4 TB | 8 | 213 | 1 | 171.36% |
| Seagate | ST3500320AS | 500 GB | 1 | 53 | 1 | 688.68% |