Starting from ZStack Cloud 4.7.21, elastic baremetal instances can integrate with iSCSI storage to get distributes storage space provided by block storage volumes. You can configure multipath for elastic baremetal instances to access iSCSI storage, effectively improving the storage performance and reducing the access latency. This avoids single-point failure of the gateway node in principle and ensures a high availability of data.
In previous version, you need to deploy a distributed storage and add it to ZStack Cloud before you can allocate the distributed storage space to elastic baremetal instances through gateway nodes.
Starting from 4.7.21, you can create and manage block storage volume on ZStack Cloud directly with a distributed storage access token. The block storage volume can be allocated to elastic baremetal instance as needed. In addition, you can configure multi-path access for these block storage volume to achieve high availability of I/O access paths and ensure business continuity. One elastic baremetal instance can be attached with 1-255 block storage volumes, and a block storage volume can be attached to 1-16 elastic baremetal instances.
ZStack Cloud provides basic lifecycle management for block storage volumes, including creation, edition, deletion, maximum/burst IOPS setting, maximum/burst bandwidth setting, expansion, and attachment/detachment to/from elastic baremetal instances. Meanwhile, ZStack Cloud allows you to create snapshots based on block storage volumes to ensure the data security.
In previous versions, ZStack Cloud has supported visual bond configurations for business NICs of elastic baremetal instances, including adding and removing bonds. ZStack Cloud 4.7.21 allows you to configure bonds (add or remove) for provision NICs of elastic baremetal instances, thus further improving your network deployment efficient. Before the configuration, make sure that the elastic baremetal instance uses a local disk as the system disk and has the agent installed.
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