Environmental Requirements; Reliability; Injected Noise; Table 8. Environmental Requirements - Certance LTO-2 Online User's Manual

Specifications

Environmental Requirements

Table 8 below lists the environmental specifications for the LTO-2 half-height drive.

Table 8. Environmental Requirements

Specification
Temperature
Airflow requirements
Thermal gradient
Relative humidity
Humidity gradient
Altitude
Shock (1/2 sine wave)
Vibration (sweep test)
Acoustic level idling
(A-wt sum)
Acoustic level operational
(A-wt sum)

Injected Noise

The internal drive operates without degradation of error rates with 100 mV of noise injected
between the chassis and 0 V at the power connector at any frequency between 45 Hz and 20 MHz.

Reliability

The LTO-2 half-height drive is designed for maximum reliability and data integrity. Table 9 below
summarizes the reliability specifications.

Table 9. Reliability

Specification
Non-recoverable error rate
Error recovery and control
Operational
+50° to +104°F
(+10° to + 40°C)
Internal: 9 CFM (front to back)
11°C per hour (10-40°C)
20% to 80% non-condensing
10% per hour
max 10,000 feet MSL (at 25°C) 40,000 feet (power off)
10 Gs peak, 11 msec
0.005 inches DA (5-43 Hz)
0.20 G peak (43–1000 Hz)
sweep rate 5-1000Hz;
(1.0 octave per minute)
52 dBA maximum 5.0 LwA Bels
57 dBA maximum 5.5 LwA Bels
Description
17
< 1 in 10 bits
• Error correction code techniques (C1 and C2 ECC)
• Read-after-write (RAW)
• Error monitoring and reporting (error log)
• Retry on
Environmental Requirements
Non-operational
–40° to +149°F
(–40° to + 66°C)
N/A
11°C per hour (10-40°C)
10% to 95% non-condensing
10% per hour
25 Gs peak, 11 msec
0.1 inches DA (5-15 Hz)
1.0 G peak (15–500 Hz)
sweep rate 5-500Hz;
(1.0 octave per minute)
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