Table 5.

Digital pathology system failure incidents

Failure 1: Firewall hardware upgrade
Root cause	Fix	Outage duration
Firewall infrastructure hardware upgrade at LCD resulting in loss of MSH workstation worksta-tion natt’d IP addresses	MSH workstation natt’d IP addresses added back to the LCD system restor-ing access to the IMS	3 days
Failure 2: Expiration of security certificate
Expiration of security certificate allowing for https encryption	Renewal of security certificate	2 days