Environmental specifications
This section provides the environmental specifications for the TS3500 Tape Library.
The TS3500 Tape Library is compliant with the environmental guidelines set by the
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
(ASHRAE). The information in Table 38 is excerpted from Thermal Guidelines for
Data Processing Environments, published in 2004 by ASHRAE.
Table 39 lists specifications for exposure to gaseous and particulate contaminants.
Attention: The environments in Table 38 refer to the hardware of the
TS3500 Tape Library and may lead to temperatures greater than
allowable for the cartridges and media stored in the library. For frames
that contain Ultrium Tape Cartridges or IBM TotalStorage 3592
Enterprise Tape Cartridges, refer to their environmental and shipping
specifications. Then, adjust the operating environment for the library
accordingly.
Table 38. Equipment environment specifications for the IBM System Storage TS3500 Tape Library
Product operation
1, 2
Product power off
2, 3, 4
Dry-bulb temperature (°C)
Relative humidity (%)
Non-condensing
Maximum
dew point
(°C)
Maximum
elevation
(m)
Maximum
rate of
change in
°C per hour
Dry-bulb
temperature
(°C)
Relative
humidity
(%)
Maximum
dew point
(°C)
Allowable Recommended
Allowable Recommended
15 to 32
d
20 to 25 20 to 80 40 to 55 17 3050 5 5 to 45 8 to 80 27
Notes:
1. Product equipment is powered on.
2. Tape products require a stable and more restricted environment (similar to Class 1). Typical requirements: minimum temperature is 15°C,
maximum temperature is 32°C, minimum relative humidity is 20%, maximum relative humidity is 80%, maximum dew point is 22°C, rate of
change of temperature is less than 2°C/h, rate of change of humidity is less than 5% RH per hour, and no condensation.
3. Product equipment is removed from the original shipping container and installed but not in use, e.g., during repair, maintenance, or upgrade.
4. Derate maximum dry-bulb temperature 1°C/300 m above 900 m.
Table 39. Gas and particulate exposure
Contaminate Requirement
Gaseous contamination Severity level G1 as per ANSI/ISA 71.04-1985
1
, which
states that the reactivity rate of copper coupons shall be
less than 300 Angstroms per month (Å/month, ≈ 0.0039
µg/cm² - hour weight gain)
2
. In addition, the reactivity
rate of silver coupons shall be less than 300 Å/month (≈
0.0035 µg/cm² - hour weight gain)
3
. The reactive
monitoring of gaseous corrosivity should be conducted
approximately 5 cm (2 in.) in front of the rack on the air
inlet side at one-quarter and three-quarter frame height
off the floor or where the air velocity is much higher.
Chapter 2. Physical planning specifications 115
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