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Operational
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Maintenance
Scheduled Maintenance
Squiz UK Border Router Upgrades
Aug 16, 12:00-14:00 AEST
NOTE: The initial date on this maintenance was incorrect - the below text now refers to the correct timing of 16/Aug/2020 03:00 BST - 05:00 BST
Squiz wishes to notify you of planned maintenance work being carried out on Squiz Cloud infrastructure that involves a short impact on your service with Squiz Cloud.
Date Starting: Sunday 16th August 2020
Maintenance Window: 03:00 BST - 05:00 BST
Location: Ash and Newbury Data Centres (UK)
Details:
During the above maintenance window, Squiz staff will be applying important security updates to the border network routers which provide connectivity between Squiz Cloud and the Internet.
Predicted Impact:
During the upgrade work, traffic between Squiz Cloud sites and the Internet will automatically be re-routed via an alternate path.
While this process is normally seamless, there may be two instances of up to 15 minutes impact as traffic is re-routed.
For clients with Squiz Edge: Sites will remain online in read-only mode, however form submissions and site edits will be unavailable.
For clients without Squiz Edge: Sites will respond slowly, or return timeout errors.
Further information:
For regular updates on this maintenance, please subscribe to automatic updates at https://status.squiz.cloud or contact your Squiz account representative.
Posted on Jul 16, 10:29 AEST
Squiz wishes to notify you of planned maintenance work being carried out on Squiz Cloud infrastructure that involves a short impact on your service with Squiz Cloud.
Date Starting: Sunday 16th August 2020
Maintenance Window: 03:00 BST - 05:00 BST
Location: Ash and Newbury Data Centres (UK)
Details:
During the above maintenance window, Squiz staff will be applying important security updates to the border network routers which provide connectivity between Squiz Cloud and the Internet.
Predicted Impact:
During the upgrade work, traffic between Squiz Cloud sites and the Internet will automatically be re-routed via an alternate path.
While this process is normally seamless, there may be two instances of up to 15 minutes impact as traffic is re-routed.
For clients with Squiz Edge: Sites will remain online in read-only mode, however form submissions and site edits will be unavailable.
For clients without Squiz Edge: Sites will respond slowly, or return timeout errors.
Further information:
For regular updates on this maintenance, please subscribe to automatic updates at https://status.squiz.cloud or contact your Squiz account representative.
Posted on Jul 16, 10:29 AEST
Sydney storage software update
Aug 18, 22:00 - Aug 19, 06:00 AEST
NOTE: This maintenance only impacts Australian Squiz Cloud clients
Our software vendor's engineering team has identified a rare but dangerous bug which can cause storage corruption when ALL of the following conditions happen simultaneously:
- A storage server goes offline
- Extremely high levels levels of disk IO are in progress
- There is a very high disk-to-server ratio in the storage array
- Data chunk CRC checksum validation is in progress
- Data integrity algorithms detect the potential of bad data
None of the above conditions are a problem on their own, however if all of the above happen at once there is the potential for your server's data to be corrupted. This has not happened yet and we do not anticipate it happening in the near future, however we need to apply this software update to prevent any possibility of the bug being triggered.
As an extra precaution, we will be shutting down systems throughout the work in order to be 100% sure that the above conditions do not trigger while performing the update.
A full upgrade plan has been put together in conjunction with our storage vendor, and we will have expert engineering staff on hand throughout the work.
Predicted Impact:
- For clients with Squiz Edge: For up to 3 hours during the maintenance window, your Squiz Cloud services will remain online, however site edits and form submissions will be unavailable.
- For clients without Squiz Edge: For up to 3 hours during the maintenance window, your Squiz Cloud services will be offline.
Squiz appreciates that this is a long maintenance period. The reason for the extended downtime is that due to the critical nature of the storage system Squiz will be shutting down all Virtual Machines before performing the upgrade. Keeping systems offline during the upgrade will ensure that even in the event that something goes wrong there will be no risk of data loss or corruption.
Posted on Jul 22, 09:15 AEST
Our software vendor's engineering team has identified a rare but dangerous bug which can cause storage corruption when ALL of the following conditions happen simultaneously:
- A storage server goes offline
- Extremely high levels levels of disk IO are in progress
- There is a very high disk-to-server ratio in the storage array
- Data chunk CRC checksum validation is in progress
- Data integrity algorithms detect the potential of bad data
None of the above conditions are a problem on their own, however if all of the above happen at once there is the potential for your server's data to be corrupted. This has not happened yet and we do not anticipate it happening in the near future, however we need to apply this software update to prevent any possibility of the bug being triggered.
As an extra precaution, we will be shutting down systems throughout the work in order to be 100% sure that the above conditions do not trigger while performing the update.
A full upgrade plan has been put together in conjunction with our storage vendor, and we will have expert engineering staff on hand throughout the work.
Predicted Impact:
- For clients with Squiz Edge: For up to 3 hours during the maintenance window, your Squiz Cloud services will remain online, however site edits and form submissions will be unavailable.
- For clients without Squiz Edge: For up to 3 hours during the maintenance window, your Squiz Cloud services will be offline.
Squiz appreciates that this is a long maintenance period. The reason for the extended downtime is that due to the critical nature of the storage system Squiz will be shutting down all Virtual Machines before performing the upgrade. Keeping systems offline during the upgrade will ensure that even in the event that something goes wrong there will be no risk of data loss or corruption.
Posted on Jul 22, 09:15 AEST
Sydney Network Patching
Aug 31, 00:00-05:00 AEST
Impact time: Up to 60 minutes
Location: Globalswitch Data Centre (Ultimo, Sydney)
Work description: During the above maintenance window, Squiz will be applying the latest security and performance patches to our Sydney network subsystem.
Predicted Impact:
For solutions utilising Squiz's Squiz Edge & Disaster Recovery platform:
During the above maintenance window, traffic will be automatically served from your DR system. Your site will remain available, however form submissions and site edits will be unavailable. The downtime is expected to last for up to 60 minutes.
Should you wish to display a maintenance page during this period, please contact support@squiz.net and we can arrange this for you.
For solutions NOT utilising Squiz's Squiz Edge and & Disaster Recovery platform:
During the above maintenance window, your site will experience downtime and visitors to your site will receive timeout messages. The downtime is expected to last for up to 60 minutes.
Unfortunately due to the nature of this work we are unable to display a maintenance page, because the physical hardware underlying your VM will be down.
If you have any queries regarding this maintenance, please contact your Squiz account representative or support@squiz.net for more information.
Posted on Mar 17, 09:33 AEDT
Location: Globalswitch Data Centre (Ultimo, Sydney)
Work description: During the above maintenance window, Squiz will be applying the latest security and performance patches to our Sydney network subsystem.
Predicted Impact:
For solutions utilising Squiz's Squiz Edge & Disaster Recovery platform:
During the above maintenance window, traffic will be automatically served from your DR system. Your site will remain available, however form submissions and site edits will be unavailable. The downtime is expected to last for up to 60 minutes.
Should you wish to display a maintenance page during this period, please contact support@squiz.net and we can arrange this for you.
For solutions NOT utilising Squiz's Squiz Edge and & Disaster Recovery platform:
During the above maintenance window, your site will experience downtime and visitors to your site will receive timeout messages. The downtime is expected to last for up to 60 minutes.
Unfortunately due to the nature of this work we are unable to display a maintenance page, because the physical hardware underlying your VM will be down.
If you have any queries regarding this maintenance, please contact your Squiz account representative or support@squiz.net for more information.
Posted on Mar 17, 09:33 AEDT