搜索

此内容没有您所选择的语言版本。

5.6.3. Logical Volume Management

download PDF
One other advanced storage technology is that of logical volume management (LVM). LVM makes it possible to treat physical mass storage devices as low-level building blocks on which different storage configurations are built. The exact capabilities vary according to the specific implementation, but can include physical storage grouping, logical volume resizing, and data migration.

5.6.3.1. Physical Storage Grouping

Although the name given to this capability may differ, physical storage grouping is the foundation for all LVM implementations. As the name implies, the physical mass storage devices can be grouped together in such a way as to create one or more logical mass storage devices. The logical mass storage devices (or logical volumes) can be larger in capacity than the capacity of any one of the underlying physical mass storage devices.
For example, given two 100GB drives, a 200GB logical volume can be created. However, a 150GB and a 50GB logical volume could also be created. Any combination of logical volumes equal to or less than the total capacity (200GB in this example) is possible. The choices are limited only by your organization's needs.
This makes it possible for a system administrator to treat all storage as being part of a single pool, available for use in any amount. In addition, drives can be added to the pool at a later time, making it a straightforward process to stay ahead of your users' demand for storage.
Red Hat logoGithubRedditYoutubeTwitter

学习

尝试、购买和销售

社区

关于红帽文档

通过我们的产品和服务,以及可以信赖的内容,帮助红帽用户创新并实现他们的目标。

让开源更具包容性

红帽致力于替换我们的代码、文档和 Web 属性中存在问题的语言。欲了解更多详情,请参阅红帽博客.

關於紅帽

我们提供强化的解决方案,使企业能够更轻松地跨平台和环境(从核心数据中心到网络边缘)工作。

© 2024 Red Hat, Inc.