. . . . . . . . . . . . . . . . . . . . 83 3 Contents 5 Virtual storage 85 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . 85 5.2 Disk image files (VDI, VMDK, VHD, HDD) typically provided by other virtu- alization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output SATA (AHCI) interface, and two SCSI adapters (LSI Logic and BusLogic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 85 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5 Virtual storage 71 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 71 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 71 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 70 5 Virtual storage 72 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 72 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 72 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5 Virtual storage 71 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 71 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 71 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 68 5 Virtual storage 70 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 70 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 70 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 71 5 Virtual storage 73 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 73 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 73 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5 Virtual storage 71 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 71 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 71 for details. Whereas providing one of these would be enough

. . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5 Virtual storage 71 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 71 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 71 for details. Whereas providing one of these would be enough

implementation consists of a set of Contrail controllers that reside on either Kubernetes control plane nodes or worker nodes depending on distribution. The Contrail controllers manage a distributed set of data planes controller, a typical deployment contains multiple controllers running on multiple nodes. When there are multiple Contrail controllers, the controllers keep in synchronization by using iBGP to exchange exchange routes. If a Contrail controller goes down, the Contrail controllers on the other nodes retain all database information and continue to provide the network control plane uninterrupted. On the worker

. . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5 Virtual storage 75 5.1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 75 5.2 Disk image files (VDI, VMDK typically provided by other virtualization platforms. That includes IDE, SCSI and SATA hard disk controllers, several virtual network cards and sound cards, virtual serial and parallel ports and an Input/Output (AHCI) interface, and two SCSI adapters (LSI Logic and Bus- Logic); see chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS, page 75 for details. Whereas providing one of these would be enough