Dimension Data CloudControl Storage Upgrade Programme: Re-Attempt on Existing Standard/High Performance/Economy Disks in AF3 (Johannesburg MCP 2.0)
Scheduled Maintenance Report for NTT Ltd. Cloud
Completed
The scheduled maintenance has been completed.
Posted Jul 11, 2019 - 06:01 UTC
In progress
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Jul 10, 2019 - 18:01 UTC
Scheduled
On June 24 at 18:00 UTC, we performed a maintenance event to migrate to new Burstable Standard/High Performance/Economy Disk Speeds in AF3 (Johannesburg MCP 2.0) as described in https://cloud-status.dimensiondata.com/incidents/zwfsxnql8h1b

As described below, a small number of servers were successful. We will be addressing servers that were not successfully updated on July 10th at 18:00 UTC:

CloudControl Change Id: OEC-11550
Time: 08:00 PM South Africa Standard Time (18:00 UTC)
Expected Total Duration: Up to 12 Hours

The June 24th change was designed to implement changes to all existing disks to allow them to burst only up the following IOPS and Throughput limits based on their disk speed:

ECONOMY: Greater of 100 IOPS or 0.5 IOPS/GB based on the size of the disk
STANDARD: Greater of 500 IOPS or 3 IOPS/GB based on the size of the disk
HIGH PERFORMANCE: Greater of 800 IOPS or 6 IOPS/GB based on the size of the disk
ALL THREE SPEEDS: Throughput limit equal to the IOPS maximum x 16 KB (Kilobytes). This limit applies in addition to the above IOPS limit.

A review has indicated a small number of servers were not properly implemented with the change, leading to inconsistent performance.

In this event, the system will re-attempt the change ONLY on servers that are not conforming to the limits above. All other existing servers will be unaffected. If an affected server is running when the change is implemented, the system will vMotion the server so that the changes take immediate effect. No restart is required.

For more information please refer to the following two articles:

Introduction to Cloud Server Local Storage ("Disks") and Disk Speeds - https://docs.mcp-services.net/x/UwIu
How do I determine if my Server Requires a Restart Using REST API? - https://docs.mcp-services.net/x/QgSZ
Posted Jul 03, 2019 - 19:30 UTC
This scheduled maintenance affected: AF - Johannesburg (NTT Cloud - AF3).