OpenStack Cinder

OpenStackStorageFree tier available

Block storage service exposing persistent volumes to Nova VMs and Ironic bare-metal nodes via iSCSI, NVMe-oF, or vendor storage drivers — direct equivalent of EBS / Azure Managed Disks / Google Persistent Disk in the cross-provider block-storage mapping

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DocumentationPricing

Sub-services (3)

Volume Types

Tiered storage profiles backed by different drivers (Ceph RBD, NetApp, Pure, vendor-specific SAN)

Snapshots

Point-in-time snapshots and full backups to Swift / external object storage

Replication

Cross-availability-zone and cross-cluster replication for DR

Tags

block-storageiscsinvmeopen-source

Equivalent services on other platforms

Amazon EBSAWS

High-performance block storage for EC2 instances with gp2, gp3, io1, io2, st1, and sc1 volume types, automatic encryption, snapshots, and multi-attach support

Azure Managed DisksAzure

Block-level storage volumes for Azure VMs with Ultra, Premium SSD, Standard SSD, and Standard HDD tiers, snapshots, and availability-zone redundancy

Persistent DiskGCP

Durable, high-performance block storage for Compute Engine and GKE with SSD and HDD options, snapshots, and regional replication

Pricing

Pricing model:free