+Information on the availability of the data centre

Information on the availability of the data centre

The Cloud provider provides subject matter experts of Cloud customers with comprehensible and transparent information on the availability of the data centres used to provide the Cloud service (including data centres operated by subcontractors), as needed. The information shows availability and downtime over one year according to industry standard classification schemes. The information enables Cloud customers to assess the Cloud service as part of their business impact analysis.
The Uptime Institute's Tier classification system is a classification customary in the industry. It defines the following levels (Tiers) for availability and downtime in relation to one year:
• Tier I: 99.671 %; up to 28.8 hours cumulative downtime per year
• Tier II: 99.741 %; up to 22.7 hours cumulative downtime per year
• Tier III: 99.982 %; up to 1.6 hours cumulative downtime per year
• Tier IV: 99.995 %; up to 25 minutes cumulative downtime per year
If there are requirements towards high availability of a data centre, the BSI HV benchmark, which provides the following availability classes (AC), is suitable:
• AC 0: without availability requirements (~95%); up to 438 hours cumulative downtime per year
• AC 1: normal availability (99%); up to 88 hours cumulative downtime per year
• AC 2: high availability (99.9%); up to 9 hours cumulative downtime per year
• AC 3: very high availability (99.99%); up to 53 minutes cumulative downtime per year
• AC 4: highest availability (99.999%); up to 6 minutes cumulative downtime per year
• AC 5: Disaster-tolerant
This information may be an optional part of the report, e.g. in a section "Other information provided by the legal representatives of the Cloud provider". The practitioner themselves do not provide an opinion on the information.

1. Ülevaade

1.1 Viited

1.2 Tuvastatud nõuded

1.3 Seotud regulatsioonid

2. Tuvastatud nõuded

Nõuded

3. Seotud regulatsioonid

Regulatsioonid