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2.9.6.3Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are specified below.
2Hz to 22Hz | 0.25 | Gs (Limited displacement) |
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22Hz to 350Hz | 0.50 | Gs |
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350Hz to 500Hz | 0.25 | Gs |
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All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws. Vibration may be applied in the X, Y or Z axis. Throughput may vary if improperly mounted.
2.9.7 Non-operating vibration
The maximum
5Hz to 22Hz | 3.0 | Gs (Limited displacement) |
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22Hz to 350Hz | 3.0 | Gs |
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350Hz to 500Hz | 3.0 | Gs |
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2.10 Acoustics
Drive acoustics are measured as overall
Note
For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time
Table 4 Fluid Dynamic Bearing (FDB) motor acoustics
| Idle* | |
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1.9 bels (typ) | ||
2.0 bels (max) | ||
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2.3 bels (typical) | ||
| 2.4 bels (max) | |
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Seek
2.1bels (typ)
2.2bels (max)
2.5bels (typical)
2.6bels (max)
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.
2.10.1 Test for Prominent Discrete Tones (PDTs)
Seagate follows the
7)to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the
2.11 Electromagnetic immunity
When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in Table 5.
Table 5 Radio frequency environments
Test
Description
Performance level
Reference standard
NAS HDD Product Manual, Rev. A | 19 |