Primo Uptime Report for Central Discovery Index - Q1 2026

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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 uptime measured on a rolling 12 month basis April 2025 to March 2026 is 100%

The uptime measured on a rolling 3 month basis January 2026 - March 2026 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: http://status.exlibrisgroup.com

Unscheduled downtime incidents in Q1 2026

Date

Start time

[UTC]

End time

[UTC]

Duration
(minutes)

Description

Scheduled downtimes during maintenance windows in Q1 2026

Start Date

Day of week

Start Time

[UTC]

End Time

[UTC]

Duration (Minutes)

Total unscheduled downtime minutes during the past 12 months

Quarter	Total unscheduled downtime in Quarter (minutes)
Q2 2025	0
Q3 2025	0
Q4 2025	0
Q1 2026	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 by the following formula:

Uptime Percentage = X /(Y–Z) × 100

Where:

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.