Planning for persistent storage
The IBM® Cloud Infrastructure Center uses the OpenStack cinder block storage service to interact with storage devices. Furthermore, it consumes the backend storage virtualization APIs to do volume related operations. For example, creating/attaching/detaching/deleting volume. The lifecycle of volume is not limited to the lifecycle of virtual machine (this means a volume can be attached to a virtual machine and will be available even after the virtual machine is decommissioned such as re-attached to another virtual machine). IBM Cloud Infrastructure Center uses the term Storage Provider for any system that provides storage volumes. Use this information to ensure that your storage provider is set up to work with IBM Cloud Infrastructure Center. Refer to Working with Volumes in Storage Provider.
Currently the following storage systems are supported:
the IBM FlashSystem, SVC and Storwize family (such as IBM FS9200, FS9250...). IBM Cloud Infrastructure 1.1.3 is based on the openstack ussuri release, refer to openstack support summary for storwize cinder driver for the supported storage models and versions.
IBM DS8000 series (such as DS8800, DS8900...). IBM Cloud Infrastructure 1.1.3 is based on the openstack ussuri release, refer to openstack support summary for IBM Storage cinder driver for the supported storage models and versions.
Refer to Planning for persistent storage for more details on the requirement.
For concept about root disk, data disk etc, please refer to Terminology
Support matrix for persistent storage on z/VM
| Disk type | root disk | data disk | swap disk |
|---|---|---|---|
| FCP (SCSI) FlashSystem, SVC and Storwize family | Y | Y | N |
| FCP (SCSI) DS8000 | Y | Y | N |
| FICON DS8000 | N | N | N |
Support matrix for persistent storage on KVM
| Disk type | root disk | data disk | swap disk |
|---|---|---|---|
| FCP (SCSI) FlashSystem, SVC and Storwize family | N | Y | N |
| FCP (SCSI) DS8000 | N | Y | N |
| FICON DS8000 | N | N | N |