Western Digital Purple Pro PR22 handleiding
Handleiding
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Specifications
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Care must also be taken to avoid the use of any organometallic (e.g., organosilicones
or organotins) compound/material in a way that creates elevated vapor levels of
these compounds/materials in the atmosphere surrounding the disk drive.
Silicone-based Thermal Interface Materials (TIM), silicone-based tapes, caulking/RTV
pastes, silicone rubbers and silicone oil lubricants are examples of materials which
may create elevated vapor levels of organometallic compound/materials.
Use of the disk drive in these abnormal or other chemically-challenging environments
is not recommended and increases the risk for failure. If any of these materials are
considered in system design, it is recommended to consult with Western Digital
Corporation.
2.5.6 Acoustics
2.5.7 RoHS (Restriction of Hazardous Substances)
This drive is in compliance with the European Union Directive 2011/65/EU and
Directive (EU) 2015/863 on the restriction of the use of certain hazardous substances
(RoHS) in electrical and electronic equipment.
2.6 Reliability Specification and Characteristics
The average Annualized Failure Rate (AFR) calculations assumes operation at nominal
voltages, a base casting temperature of 40°C, and the workload usage of a typical
surveillance environment. Workload is defined as the number of bytes transferred by
the user to/from the drive. If the system(s) that the drive is installed in are not
capable of meeting the characteristics listed below, please use a WD drive that
matches your system(s)' capability. Operating drives outside any of the reliability
characteristics below will result in a higher.
Table 2-10. Acoustics
TYPICAL SOUND POWER LEVEL
Measured per ECMA-74/ISO 7779
Idle Mode (average dBA, no audible pure tones) 27
Seek Mode (average dBA) 29
Table 2-11. Reliability Specification and Characteristics
Reliability Specification
Average AFR over the Limited Warranty Period 0.44%
Mean Time Between Failure (MTBF)
1
1
MTBF and AFR specifications are based on a sample population and are estimated by statistical
measurements and acceleration algorithms under typical operating conditions, workload of 220TB/
year and drive temperature of 40°C. Derating of MTBF and AFR will occur above these parameters, up
to 65°C drive temperature. MTBF and AFR ratings do not predict an individual drive’s reliability and do
not constitute a warranty.
2,000,000 Hours
Reliability Characteristics
Drive Temperature Up to 65°C
Annual Power on Hours (POH) Up to 8760
Total Workload over the Limited Warranty Period
2
2
Annualized Workload Rate = TB transferred x (8760 / recorded power-on hours)
Up to 550TB/Yr
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Productinformatie
| Merk | Western Digital |
| Model | Purple Pro PR22 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 4319 MB |