Acoustics; Reliability; Agency Listings; Electromagnetic Compliance For The European Union - Seagate Medalist 2520 Product Manual

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1.15 Acoustics

This table shows the overall A-weighted acoustic sound power and sound
pressure levels for the drives. All measurements are generally consistent
with ISO document 7779. Acoustic measurements are taken under
essentially free-field conditions over a reflecting plane. The drive is
oriented with the top cover up for all tests.
Overall A-weighted
Value
Sound power, (bels)
Sound pressure, (dBA)

1.16 Reliability

Read error rates are measured with automatic retries and data correction
with ECC enabled and all flaws reallocated. The mean time between
failures (MTBF) is measured at nominal power at sea level and an
ambient temperature of 25°C.
Nonrecoverable read errors
Seek errors
Contact start/stops
MTBF
Service life

1.17 Agency listings

The drive is listed by agencies as follows:
• Recognized in accordance with UL478 and UL1950
• Certified to CSA C22.2 No. 220-M1986 and CSA C22.2 No. 950
• Certified to VDE 0805/05.90 and EN 60950/1.88 as tested by VDE
1.18 Electromagnetic compliance for the European
Union
If this model has the CE Marking, it complies with the European Union
requirements of the Electromagnetic Compatibility Directive 89/336/EEC
Medalist 2520 Product Manual, Rev. A
Idle Seek
3.9 (typ), 4.2 (max) 4.4 (typ), 4.7 (max)
29 (typ), 32 (max) 34 (typ), 37 (max)
13
1 per 10 bits transferred
7
1 per 10 physical seeks
40,000 times, based on a 30
second on/off duty cycle
300,000 power-on hours
5 years