Gas And Particulate Exposure Table; Acclimation; Gas And Particulate Contamination - IBM TS4300 User Manual

Table 20. Environment for storage and shipping the IBM tape cartridge
Environmental factor
Temperature
Relative humidity
(noncondensing)
Maximum wet bulb
temperature (does not
apply to 3592 JE tape
cartridges)
Maximum dew point
temperature (applies only
to 3592 JE tape
cartridges)
Magnetic field

Gas and particulate exposure table

Table 21. Gas and particulate contamination
Contaminate
Gaseous contamination
Particulate contamination
Notes:
1. ANSI/ISA-S71.04. 1985. Environmental conditions for process measurement and control systems: Airborne contaminants, Instrument Society of America, Research Triangle Park,
NC, 1985.
2. The derivation of the equivalence between the rate of copper corrosion product thickness growth in Å/month and the rate of weight gain assumes that Cu 2 S and Cu 2 O grow in equal
proportions.
3. The derivation of the equivalence between the rate of silver corrosion product thickness growth in Å/month and the rate of weight gain assumes that Ag 2 S is the only corrosion
product.
4. The deliquescent relative humidity of particulate contamination is the relative humidity at which the dust absorbs enough water to become wet and promote ionic conduction.
5. Surface debris is randomly collected from 10 areas of the data center on a 1.5 cm (0.6 inch) diameter disk of sticky electrically conductive tape on a metal stub. If examination of
the sticky tape in a scanning electron microscope reveals no zinc whiskers, the data center is considered free of zinc whiskers.

Acclimation

Server and storage equipment (racks and frames) must be gradually acclimated to the surrounding
environment to prevent condensation.
When server and storage equipment (racks and frames) is shipped in a climate where the outside
temperature is below the dew point of the destination (indoor location), there is a possibility that water
condensation can form on the cooler inside and outside surfaces of the equipment when the equipment is
brought indoors.
32 IBM TS4300 Tape Library Machine Type 3555: User's Guide
Environmental specifications
Allowable storage
16 to 32°C
(61 to 90°F)
20 to 80%
26°C (79°F)
22°C (72°F)
Stray magnetic field at any point on tape not to exceed 50 oersteds (4000 ampere/
meter).
Requirement
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 inches) 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.
Data centers must meet the cleanliness level of ISO 14644-1 class 8. For data centers without airside economizer, the ISO 14644-1 class
8 cleanliness might be met simply by the choice of the following filtration:
• The room air might be continuously filtered with MERV 8 filters.
• Air entering a data center might be filtered with MERV 11 or preferably MERV 13 filters.
For data centers with airside economizers, the choice of filters to achieve ISO class 8 cleanliness depends on the specific conditions
present at that data center.
The deliquescent relative humidity of the particulate contamination should be more than 60% RH. 4
Data centers must be free of zinc whiskers. 5
Recommended storage
16 to 25°C
(61 to 77°F)
20 to 50%
N/A
N/A
IBM Confidential
Shipping
-23 to 49°C
(-9 to 120°F)
5 to 80%
26°C (79°F)
22°C (72°F)