Cloud Drive overview
1, provides low-latency cloud hosting, by providing distributed storage to achieve lasting
2, Jingdong cloud, for example, data in the cloud is a triple hard copy of the real-time way to store, thus avoiding the host's lead to failure because data not available
3 cloud disk capacity can be expanded as needed in real time, when we find cloud cloud host hard disk capacity is not enough, we can complete the cloud expansion disk within minutes
4, the hard disk can only be hanging in a cloud to a cloud available area on the hard disk where the host can not be cross-regional area available to mount
5, and in accordance with physical properties do not cloud the hard disk device is divided into a cloud-capacity disk HDD, SSD universal cloud disk, SSD performance cloud disk type three kind
Cloud hard indicators:
1, second run of the IO
2, throughput (bandwidth)
Cloud hard drive features
1, a storage service implemented independently
(1) is independent of the hard cloud cloud host, these can always necessary to mount and unmount operations cloud hard
(2) a single cloud host can mount up to eight hard disks cloud
(3) by the storage service understand the health status of the hard drive cloud
2, the snapshot function embodiment
a so-called transient state is a snapshot of a particular point in time
(1) a recovery operation based snapshot cloud hard, that is to say by way of fast recovery snapshot restore the lost accidentally deleted or corrupted state data traffic to a certain point in time the state
(2) based on a snapshot of the cloud hard copy for the hard disk having the same cloud data, quickly generate a set of data of the same batch deployment cloud hard
3, the elastic expansion can be extended function
(1) to grow capacity
(2) three optional hard cloud model, point to note is the capacity and performance IOPS performance SSD cloud type disc are independent billing
4 Notes
(1) a single account, the same region, the number of cloud hard limit 40, by submitting ticket modifying
a single account, the same region, the number of snapshots cloud hard limit 15 (2), no work order can be modified by
Create and mount the hard drive cloud
Multi-mount cloud hard drive
Creating a cloud hard drive when there is an option to choose multi-mount cloud hard, if not checked, then this disc is an ordinary cloud hard drive, can only be mounted to a particular cloud host instance, can not mount cloud plurality of host instances, the production environment, in certain production environments, the need to mount the hard disk cloud storage on a host such as NFS, etc. examples of multiple clouds, to be noted that more than one cloud-point mount up the hard disk 16 can be mounted at the same time to the cloud host instance, do not have the cluster management capabilities, such as the need to deploy RHCS cluster itself.
Extended file system
Cloud hard drive capacity expansion
Snapshot cloud hard drive
1, cloud hard disk snapshot is independent of the cloud hard disk exists, do not take the user storage space
2, according to timing requirements, manually create a snapshot
3 to batch create cloud hard drive through snapshots for rapid deployment, should be noted that cloud hard drive capacity not less than a snapshot capacity, otherwise an error
Delete cloud hard drive
1, only by the configuration of cloud billing hard disk can be deleted, reported annual month of configuration is not deleted
2, cloud hard disk after deleting snapshots can be retained
Cloud disk encryption
1, KMS system based Jingdong cloud, cloud encrypt the hard disk
2, the encryption function is transparent to the service
3, a snapshot is created by encrypting drive automatically encrypted, whereas the non-encrypted hard disk does not automatically encrypted snapshot
