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Product Description 15

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

This document introduces the storage system from the aspects of the market position, features, architecture, technical specifications, production configuration, environment requirement, standard compliance, and granted certifications.
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Particle Contaminants

Particle Contaminants

Particle contaminants and other negative environmental factors (such as abnormal temperature and humidity) may expose IT equipment to a higher risk of corrosive failure. This section specifies the limitation on particle contaminants with the aim at avoiding such risks.

The concentration level of particle contaminants in a data center should meet the requirements listed in the white paper entitled Gaseous and Particulate Contamination Guidelines for Data Centers published in 2011 by American Society of Heating Refrigerating and Air-conditioning Engineers (ASHRAE) Technical Committee (TC) 9.9.

ASHRAE, affiliated to International Organization for Standardization (ISO), is an international organization operated for the exclusive purpose of advancing the arts and sciences of heating, ventilation, air-conditioning, and refrigeration (HVAC & R). The Gaseous and Particulate Contamination Guidelines for Data Centers is widely accepted, which is prepared by the members of ASHRAE TC 9.9, AMD, Cisco, Cray, Dell, EMC, Hitachi, HP, IBM, Intel, Seagate, SGI, and Sun.

According to the Guidelines, particle contaminants in a data center shall reach the cleanliness of ISO 14664-1 Class 8:
  • Each cubic meter contains not more than 3,520,000 particles that are greater than or equal to 0.5 μm.
  • Each cubic meter contains not more than 832,000 particles that are greater than or equal to 1 μm.
  • Each cubic meter contains not more than 29,300 particles that are greater than or equal to 5 μm.
It is recommended that you use an effective filter to process air flowing into the data center as well as a filtering system to periodically clean the air already in the data center.

ISO 14644-1, Cleanrooms and Associated Controlled Environments - Part 1: Classification of Air Cleanliness, is the primary global standard on air cleanliness classification. Table 7-3 gives the air cleanliness classification by particle concentration.

Table 7-3  Air cleanliness classification by particle concentration of ISO 14664-1

ISO Class

Maximum allowable concentrations (particles/m3) for particles equal to and greater than the considered sizes shown below

≥ 0.1 μm

≥ 0.2 μm

≥ 0.3 μm

≥ 0.5 μm

≥ 1 μm

≥ 5 μm

Class 1

10

2

-

-

-

-

Class 2

100

24

10

4

-

-

Class 3

1000

237

102

35

8

-

Class 4

10,000

2370

1020

352

83

-

Class 5

100,000

23,700

10,200

3520

832

29

Class 6

1,000,000

237,000

102,000

35,200

8320

293

Class 7

-

-

-

352,000

83,200

2930

Class 8

-

-

-

3,520,000

832,000

29,300

Class 9

-

-

-

-

8,320,000

293,000

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Updated: 2019-02-01

Document ID: EDOC1000084184

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