Controller Disk Configurations for All-in-one Systems

For StarlingX Simplex and Duplex Systems, the controller disk configuration is highly flexible to support different system requirements for Cinder and nova-local storage.

You can also change the disk configuration after installation to increase the persistent volume claim or container-ephemeral storage.

Table 1. Disk Configurations for StarlingX Simplex or Duplex systems

No. of Disks

Disk

BIOS Boot

Boot

Root

Platform File System Volume Group (cgts-vg)

Root Disk Unallocated Space

Ceph OSD (PVCs) | Notes

1

/dev/sda

Not supported

2

/dev/sda

/dev/sdb

/dev/sda1

/dev/sda2

/dev/sda3

/dev/sda4

Not allocated

Disk

Space left unallocated for future application use

AIO-SX [1] (replication = 1) ; AIO-DX (replication = 2)

2

/dev/sda

/dev/sdb

/dev/sda1

/dev/sda2

/dev/sda3

/dev/sda4

/dev/sda5 (cgts-vg)

Disk

Space allocated to cgts-vg to allow filesystem expansion

AIO-SX (replication = 1) ; AIO-DX (replication = 2)

3

/dev/sda

/dev/sdb

/dev/sdc

/dev/sda1

/dev/sda2

/dev/sda3

/dev/sda4

Not allocated

Disk

Disk

Space left unallocated for future application use

AIO-SX:superscript:1: (replication = 2) ; AIO-DX (replication = 2)

AIO-SX:superscript:1: (replication = 2) ; AIO-DX (replication = 2)

3

/dev/sda

/dev/sdb

/dev/sdc

/dev/sda1

/dev/sda2

/dev/sda3

/dev/sda4

/dev/sda5 (cgts-vg)

Disk

Disk

Space allocated to cgts-vg to allow filesystem expansion

AIO-SX:superscript:1: (replication = 2) ; AIO-DX (replication = 2)

AIO-SX:superscript:1: (replication = 2) ; AIO-DX (replication = 2)