System Availability and Durability | Teradata VantageCore | EDW - System Availability and Durability - Teradata VantageCore VMware

Teradata® VantageCore powered by Dell Technologies - Enterprise Data Warehouse

Deployment
VantageCore
Edition
VMware
Product
Teradata VantageCore VMware
Published
April 2024
Language
English (United States)
Last Update
2024-04-24
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Product Category
Cloud
The following table estimates the key data points of availability and durability based on the implementation design, Teradata architecture, the solution scale, and the underlying components characteristics:
Number of 8+1 (ESXi) Cliques Total Number of Nodes (ESXi), Excluding HSNs Estimated System Availability (MTBF, Availability in %, hours per year) System Data Loss (MTTDL, 1 chance in X per year)
1 8 53.8e3, 99.99%, 1.1hr 3.7e9, 1 in 439,000
2 16 27.8e3, 99.98%, 1.9hr 2.4e9, 1 in 278,000
3 24 18.7e3, 99.97%, 2.8hr 1.7e9, 1 in 203,000
4 32 14.1e3, 99.96%, 3.6hr 1.4e9, 1 in 160,000
5 40 11.4e3, 99.95%, 4.5hr 1.1e9, 1 in 132,000
6 48 9.5e3, 99.94% 5.3hr 9.6e8, 1 in 113,000
7 56 8.1e3, 99.93%, 6.2hr 8.4e8, 1 in 98,000
8 64 7.1e3, 99.92% 7.0hr 7.4e8, 1 in 87,000
9 72 6.3e3, 99.91%, 7.9hr 6.6e8, 1 in 78,000
10 80 5.7e3, 99.90%, 8.7hr 6.0e8, 1 in 71,000
11 88 5.2e3, 99.89% 9.6hr 5.5e8, 1 in 65,000
12 96 4.8e3, 99.88% 10.4hr 5.1e8, 1 in 60,000
13 104 4.4e3, 99.87%, 11.2hr 4.7e8, 1 in 55,000
The estimates specified in the table are created using the following parameters based on similar systems and may not reflect the actual characteristics of the underlying components:
  • Host Node (Analytics Database or Management Node) MTBF - 50k hours
  • Array Availability - 99.999% with 4 hour critical support (Dell Provided through ProSupport Plus)
  • Switch MTBF - 500k hours
  • Copper Cable MTBF - 10M hours
  • Optical Cable MTBF - 1M hours
  • Fallback – On
  • Fallback recovery estimate of approximately 8 hours