Skip to main content
  • Subscribe by RSS
  • Ex Libris Knowledge Center

    Higher-Ed-Platform Uptime Report for NA91 Instance (North America) - Q2 2023

    Uptime Quarterly Reports are published each quarter to provide a comprehensive view of our uptime performance as measured over the last three (3) months and over the last twelve (12) months. The report measures our performance as defined in the Service Level Agreement. 

    This document details the uptime report for the Higher-Ed-Platform (Alma, Primo VE, Leganto, Esploro) NA91 in North America. 

    Uptime Report

    The uptime measured on a rolling 12 month basis July 2022 - June 2023 is 99.99%

    The uptime measured on a rolling 3 month basis April 2023 - June 2023 is 100%

    Please note our System Uptime Status page, which allows our customers to view the current status of their instance/environment at any time, using the following link:


    Unscheduled downtime (outside of the MW) incidents in Q2 2023


    Start time


    End time





    Scheduled downtime (during the MW) incidents in Q2 2023 

    Start Date

    Day of Week

    Start Time


    End Time


    Duration (Minutes)

    April 2, 2023 Sunday 02:06 AM 02:36 AM 30
    May 7, 2023 Sunday 02:09 AM 02:42 AM 33
    May 14. 2023 Sunday 02:01 AM 02:36 AM 35
    02:58 AM 03:23 AM 25
    June 4, 2023 Sunday 02:03 AM 02:27 AM 24
    03:06 AM 03:43 AM 37
    June 11, 2023 Sunday 02:16 AM 02:51 AM 35

    Total unscheduled downtime minutes during the past 12 months


    Total unscheduled downtime in Quarter (minutes)

    Q3 2022 0
    Q4 2022 11
    Q1 2023 0
    Q2 2023 0


    How is Uptime Calculated? 

    The uptime calculation is based on the following calculation (as defined in the Service Level Agreement):

    "Uptime" means the total period in minutes during which the Service is available for access and use during this period.


    Uptime Percentage” means Uptime expressed as a percentage, calculated in accordance with the following formula:   


     Uptime Percentage = X /(Y–Z) × 100    


      X = Uptime

      Y = Last 12 months period

      Z = The duration (in minutes) of any SLA Exclusions* during these 12 months


    *SLA exclusions are defined in the contract SLA (e.g. Scheduled maintenance, etc.)


    Further Information

    If you have any queries on the information within this report please contact Ex Libris through your usual channel.