Administrator’s Command Line Guide
Table Of Contents
- Introduction
- Accessing Acronis Storage Clusters via iSCSI
- Preparing to Work with Acronis Storage iSCSI Targets
- Creating and Running Acronis Storage iSCSI Targets
- Listing Acronis Storage iSCSI Targets
- Transferring Acronis Storage iSCSI Targets Between Acronis Storage Nodes
- Stopping Acronis Storage iSCSI Targets
- Deleting Acronis Storage iSCSI Targets
- Configuring Multipath I/O for Acronis Storage iSCSI Targets
- Managing CHAP Accounts for Acronis Storage iSCSI Targets
- Managing LUN Snapshots
- Accessing Acronis Storage Clusters via S3 Protocol
- Monitoring Acronis Storage Clusters
- Managing Cluster Security
- Maximizing Cluster Performance
Chapter 3. Accessing Acronis Storage Clusters via S3 Protocol
storage services run on hosts, no virtual environments (or respective licenses) are required for object
storage.
3.1.2 Object Storage Overview
In terms of S3 object storage, a file is an object. Object servers store each object loaded via the S3 API as a pair
of entities:
• Object names and associated object metadata stored on an NS. An object name in the storage is deter-
mined based on request parameters and bucket properties in the following way:
•
If bucket versioning is disabled, an object name in the storage contains bucket name and object
name taken from an S3 request.
•
If bucket versioning is enabled, an object name also contains a list of object versions.
• Object data stored on an OS. The directory part of an object name determines an NS to store it while the
full object name determines an OS to store the object data.
3.1.2.1 Multipart Uploads
A name of a multipart upload is defined by a pattern similar to that of an object name but the object that
corresponds to it contains a table instead of file contents. The table contains index numbers of parts and their
offsets within the file. This allows to upload parts of a multi-part upload in parallel (recommended for large
files). The maximum number of parts is 10,000.
3.1.2.2 S3 Storage Interaction with a Acronis Storage Cluster
An S3 storage cluster requires a working Acronis Storage cluster on each of S3 cluster nodes. Acronis Storage
provides content sharing, strong consistency, data availability, reasonable performance for random I/O oper-
ations, and high availability for storage services. In storage terms, S3 data is a set of files (see Object Server on
page 20) that the Acronis Storage file system layer (vstorage-mount) does not interpret in any way.
3.1.3 Object Storage Components
This section familiarises you with S3 storage components—gateways, object servers, and name servers—and
describes S3 management tools and service buckets.
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