16th July 2018

PLANNED MAINTENANCE: POSSIBLE SERVICE DISRUPTION in SNG01 on July 27, 2018 at 2200 SGT (UTC +8)

Start Date: Friday 27-Jul-2018 14:00 UTC End Date: Saturday 28-Jul-2018 00:00 UTC Duration: 10 hours Event Type: Planned Event

Your account is at risk for a service disruption due to a maintenance event that will reroute current network traffic from Master Backend Router (MBR01) to Master Backend Router (MBR02) to decommission MBR01. This is a continuation of the maintenance on July 13, 2018 (Event ID 59794703).

This effort will ensure continued security and availability of the production network. During this maintenance, there may be delays in server provisioning, access to backend services such a storage and some OS updates may occur.

We will take every effort to prevent any downtime. Given the nature of the work and the device, we recommend that all customers to create a backup of the data on their Virtual Server Instances as a precaution, as delays in traffic beyond only a few seconds could cause servers to go read-only.

Network Engineers will be migrating services from MBR01 to MBR02(a)(b) in six units of work. We have all MSS(s) segmented in four groups.

  1. Migrate MBR02(a)(b) and the ASS(s) and MSS(s) below the routers to spanning-tree domain as MBR01-MST
  2. Straddle Group 1 between MBR01 and MBR02(a)(b) and for each MSS in Group 1 configure new port-channel to MBR02(a)(b) and establish connectivity, shut the link of MBR01 and migrate to MBR02(a)(b)
  3. Straddle Group 2 between MBR01 and MBR02(a)(b) and for each MSS in Group 2 configure new port-channel to MBR02(a)(b) and establish connectivity, shut the link of MBR01 and migrate to MBR02(a)(b)
  4. Straddle Group 3 between MBR01 and MBR02(a)(b) and for each MSS in Group 3 configure new port-channel to MBR02(a)(b) and establish connectivity, shut the link of MBR01 and migrate to MBR02(a)(b)
  5. Straddle Group 4 between MBR01 and MBR02(a)(b) and for each MSS in Group 4 configure new port-channel to MBR02(a)(b) and establish connectivity, shut the link of MBR01 and migrate to MBR02(a)(b)
  6. Decommission MBR01

Customers can expect to receive a reminder notification no later than 24 hours in advance and one update no later than 1 hour before the maintenance window is open.

We anticipate the maintenance to take up to 10 hours.

This will be updated at the completion of each phase and at the completion of the maintenance.

Please follow normal procedures for notifications of an outage and reference this post. Network Engineering along with Engineers from Compute and Storage will monitor this event and be available for assistance if needed.