companies of all sizes and across 40 vertical markets
Supplementary notes
The actual unplanned annual downtime for the three categories translates as follows:
-99.9 percent: 8.76 hours;
-99.99 percent: 52 minutes;
-99.999 percent: 5.25 minutes or less;
- > 99.999 percent: 52 seconds.
Citation formats
Global enterprise server reliability/availability requirements 2013-2020
The statistic depicts global enterprise demand for the reliability and/or availability of server hardware and operating systems, according to a 2020 survey. In 2020, ** percent of respondents indicated they required their servers to be available * percent of the time.
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ITIC, & Lenovo, & IBM. (April 1, 2020). Enterprise server reliability and availability requirements worldwide, from 2013 to 2020 [Graph]. In ÀÖ²¥´«Ã½app×îа汾. Retrieved August 17, 2026, from /statistics/753907/worldwide-enterprise-server-availability-reliability-requirement/
ITIC, und Lenovo, und IBM. "Enterprise server reliability and availability requirements worldwide, from 2013 to 2020." Chart. April 1, 2020. ÀÖ²¥´«Ã½app×îа汾. Accessed August 17, 2026. /statistics/753907/worldwide-enterprise-server-availability-reliability-requirement/
ITIC, Lenovo, IBM. (2020). Enterprise server reliability and availability requirements worldwide, from 2013 to 2020. ÀÖ²¥´«Ã½app×îа汾. ÀÖ²¥´«Ã½app×îа汾 Inc.. Accessed: August 17, 2026. /statistics/753907/worldwide-enterprise-server-availability-reliability-requirement/
ITIC, and Lenovo, and IBM. "Enterprise Server Reliability and Availability Requirements Worldwide, from 2013 to 2020." ÀÖ²¥´«Ã½app×îа汾, ÀÖ²¥´«Ã½app×îа汾 Inc., 1 Apr 2020, /statistics/753907/worldwide-enterprise-server-availability-reliability-requirement/
ITIC & Lenovo & IBM, Enterprise server reliability and availability requirements worldwide, from 2013 to 2020 ÀÖ²¥´«Ã½app×îа汾, /statistics/753907/worldwide-enterprise-server-availability-reliability-requirement/ (last visited August 17, 2026)
Enterprise server reliability and availability requirements worldwide, from 2013 to 2020 [Graph], ITIC, & Lenovo, & IBM, April 1, 2020. [Online]. Available: /statistics/753907/worldwide-enterprise-server-availability-reliability-requirement/
