Storage(SW)
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HDFS
iRODS
Ceph
GlusterFS
Lustre
Arch
Central
Central
Distributed
Decentral
Central
Naming
Index
Database
CRUSH
EHA
Index
API
CLI, FUSE
CLI, FUSE
FUSE, mount
FUSE, mount
FUSE
REST
REST
REST
Fault-detect
Fully connect.
P2P
Fully connect.
Detected
Manually
sys-avail
No-failover
No-failover
High
High
Failover
data-aval
Replication
Replication
Replication
RAID-like
No
Placement
Auto
Manual
Auto
Manual
No
Replication
Async.
Sync.
Sync.
Sync.
RAID-like
Cache-cons
WORM, lease
Lock
Lock
No
Lock
Load-bal
Auto
Manual
Manual
Manual
No
As of now only FUSE client and gNFS server would support RDMA transport.
Ceph uniquely delivers object, block, and file storage in one unified system. A Ceph Storage Cluster consists of two types of daemons:
Ceph Monitor: maintains a master copy of the cluster map
Ceph OSD Daemon: checks its own state and the state of other OSDs and reports back to monitors.
CEPH: Provides a robust, highly scalable block, object, and filesystem storage platform for modern workloads, like cloud infrastructure and data analytics. Consistently ranked as preferred storage option by OpenStack® users. Gluster: Provides a scalable, reliable, and cost-effective data management platform, streamlining file and object access across physical, virtual, and cloud environments.
software defined distributed storage that can scale to several petabytes. It provides interfaces for object, block and file storage.
GlusterFS volume snapshot feature is based on thinly provisioned LVM snapshot.
Ceph supports many higher level interfaces, including QEMU, libvirt, OpenStack and CloudStack. Ceph supports the ability to create many copy-on-write (COW) clones of a block device shapshot. Snapshot layering enables Ceph block device clients to create images very quickly.
(with screenshots)
File, Block, and Object Storage Services for your Cloud-Native Environment
Store securely encrypted backups in the cloud! Amazon S3, OneDrive, Google Drive, Rackspace Cloud Files, HubiC, Backblaze (B2), Amazon Cloud Drive (AmzCD), Swift / OpenStack, WebDAV, SSH (SFTP), FTP, and more!