红帽全球峰会16.6. Creating a software RAID during the installation
Redundant Arrays of Independent Disks (RAID) devices are constructed from multiple storage devices. These devices are arranged to provide increased performance and, in some configurations, greater fault tolerance. A RAID device is created in one step and disks are added or removed as necessary. \
You can configure one RAID partition for each physical disk in your system. The number of disks available to the installation program determines the levels of RAID device available. For example, if your system has two disks, you cannot create a RAID 10 device, as it requires a minimum of three separate disks. To optimize your system’s storage performance and reliability, RHEL supports software RAID 0, RAID 1, RAID 4, RAID 5, RAID 6, and RAID 10 types with LVM and LVM Thin Provisioning to set up storage on the installed system.
On 64-bit IBM Z, the storage subsystem uses RAID transparently. You do not have to configure software RAID manually.
Prerequisites
- You have selected two or more disks for installation before RAID configuration options are visible. Depending on the RAID type you want to create, at least two disks are required.
- You have selected the radio button on the Installation Destination window and you have entered the Manual Partitioning window by clicking on the Done button.
- You have created a mount point. By configuring a mount point, you can configure the RAID device.
Procedure
- From the left pane of the Manual Partitioning window, select the required partition.
- Click the Device Type drop-down menu and select RAID.
- Under the Device(s) section, click . The Configure Mount Point dialog box opens.
- Select the disks that you want to include in the RAID device and click to close the dialog box.
- Click the File System drop-down menu and select your preferred file system type.
- Click the RAID Level drop-down menu and select your preferred level of RAID.
- Click to save your changes.
- Click to apply the settings to return to the Installation Summary window.
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}