The disk configuration utility enables you to move BMC Atrium Discovery data onto and create swap space on new disks on your appliance. However, the following restrictions apply:
Back up your data before changing disk configurations
The disk management utility performs disk operations such as partitioning and moving data. All data on the new disks is deleted. When data is moved from the system disk, it is copied to the new disk and deleted from the system disk. Before using it you should always back up your appliance.
LVM is not supported
If you try to add an LVM disk, the operation fails and the following message is displayed:
Unexpected system configuration: LVM-based configuration detected
The following disk types are defined:
Disk type |
Description |
---|---|
System Disk |
The disk on which BMC Atrium Discovery is installed. |
Additional Disk |
Any additional disk which contains BMC Atrium Discovery data. |
New Disk |
Any additional disk with no mounted partitions. There must be 4000 MB free space on the disk after the copy operation or the operation is not permitted. If you are only creating swap space, the disk must be larger than the suggested swap size. |
Non ADDM Disk |
Any additional disk with mounted partitions. These partitions must be unmounted before this disk can be configured using the disk management utility. |
The Disk Configuration page has a panel at the top which shows any pending operations, and a panel which shows the current configuration of any disks in the appliance and the suggested configuration of any new disks. A comprehensive key to the data types and their representation is also provided.
On any new disk, a Change Usage drop down list is displayed which is populated with the data partitions on the system disk. Where there is insufficient space on the new disk to copy the data from a particular partition, that partition's label is disabled. The label is also disabled if the partition has already been selected to have its data moved to another disk.
You can also choose to add a swap partition to the disk by selecting the check box. The check box is only displayed if you have insufficient swap space configured. The disk configuration utility uses the following calculation to determine the best swap size.
The add swap check box is not displayed if the available new disk does not have enough space to store the additional swap to reach the optimal swap size. For example, if the system has 8GB swap by default, and the optimal swap size is 24GB, then 16GB additional swap is required. If the new disk has only 12GB available, the check box is not displayed.
When you make the changes you have chosen or to accept the changes suggested by the system, the services are shut down and a progress indicator is displayed.
If the only operation you perform is to add swap to a new disk, the services are not stopped and started and you do not need to login.
When data is moved from an additional disk that contains only a data partition, at the end of processing, the disk is identified as an "New Disk" and is displayed with a suggested configuration. The existing data is not deleted, though the partition is not mounted.
When data is moved from an additional disk that contains a data partition and a swap partition, at the end of processing, the disk is identified as an "Non ADDM Disk". The existing data is not deleted, though the partition is not mounted. To reuse this disk, disable the swap partition as shown here.