There are times when disk space problems show up on mission critical systems such as the CA Performance Manager (CAPM) Data Repository (DR) Vertica Database host systems.
For example a disks size needs to be increased, or a disk type change is required. In these instances there are specific steps that must be followed to ensure success. Without following these steps to accomplish this task, the chances of having a corrupted or broken database system increase.
To minimize and nearly eliminate these risks, follow these instructions to change or otherwise replace the disks.
Two options with slightly different instructions are presented here to select from.
The first will allow:
The second will allow:
In both sets of instructions the following best practices would apply:
Perform the disk replacement at any given time. This option retains access to the CAPM UI for user reports and data analysis, though due to this it can possibly result in data corruption if something fails badly during the disk change process. To execute this option follow these instructions:
Alternative process that will increase the likelihood of completing this change with no corruption to the DB or its data. This option recommends the change is performed during night time or off-peak hours when there is little to no user activity in the system. This option also recommends shut down of CAPC services to ensure no access to DB at the time of the disk changes. This option may require change order submissions and scheduling for server downtime.
Release: IMDAGG99000-2.5-Infrastructure Management-Data Aggregator