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Red Hat Enterprise Linux 9 Essentials Book now available.

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Red Hat Enterprise Linux 9 Essentials Print and eBook (PDF) editions contain 34 chapters and 298 pages

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9.5. Storage Devices

You can install Red Hat Enterprise Linux on a large variety of storage devices. This screen allows you to select either basic or specialized storage devices.
Storage devices
Screen to select basic or specialized storage devices
Figure 9.2. Storage devices

Basic Storage Devices
Select Basic Storage Devices to install Red Hat Enterprise Linux on the following storage devices:
  • hard drives or solid-state drives connected directly to the local system.
Specialized Storage Devices
Select Specialized Storage Devices to install Red Hat Enterprise Linux on the following storage devices:
  • Storage area networks (SANs)
  • Direct access storage devices (DASDs)
  • Firmware RAID devices
  • Multipath devices
Use the Specialized Storage Devices option to configure Internet Small Computer System Interface (iSCSI) and FCoE (Fiber Channel over Ethernet) connections.
If you select Basic Storage Devices, anaconda automatically detects the local storage attached to the system and does not require further input from you. Proceed to Section 9.6, “Setting the Hostname”.

9.5.1.  The Storage Devices Selection Screen

The storage devices selection screen displays all storage devices to which anaconda has access.
Select storage devices — Basic devices
The Basic Devices tab
Figure 9.3. Select storage devices — Basic devices

Select storage devices — Multipath Devices
The Multipath Devices tab
Figure 9.4. Select storage devices — Multipath Devices

Select storage devices — Other SAN Devices
The Other SAN Devices tab
Figure 9.5. Select storage devices — Other SAN Devices

Devices are grouped under the following tabs:
Basic Devices
Basic storage devices directly connected to the local system, such as hard disk drives and solid-state drives.
Firmware RAID
Storage devices attached to a firmware RAID controller.
Multipath Devices
Storage devices accessible through more than one path, such as through multiple SCSI controllers or Fiber Channel ports on the same system.
Other SAN Devices
Any other devices available on a storage area network (SAN).
If you do need to configure iSCSI or FCoE storage, click Add Advanced Target and refer to Section, “ Advanced Storage Options ”.
The storage devices selection screen also contains a Search tab that allows you to filter storage devices either by their World Wide Identifier (WWID) or by the port, target, or logical unit number (LUN) at which they are accessed.
The Storage Devices Search Tab
The tab contains a drop-down menu to select between searching by port, target, and LUN (with corresponding text boxes for these values) and searching by WWID (with a corresponding text box for this value).
Figure 9.6. The Storage Devices Search Tab

The tab contains a drop-down menu to select searching by port, target, WWID, or LUN (with corresponding text boxes for these values). Searching by WWID or LUN requires additional values in the corresponding text box.
Each tab presents a list of devices detected by anaconda, with information about the device to help you to identify it. A small drop-down menu marked with an icon is located to the right of the column headings. This menu allows you to select the types of data presented on each device. For example, the menu on the Multipath Devices tab allows you to specify any of WWID, Capacity, Vendor, Interconnect, and Paths to include among the details presented for each device. Reducing or expanding the amount of information presented might help you to identify particular devices.
Selecting Columns
The drop-down menu in its expanded state
Figure 9.7. Selecting Columns

Each device is presented on a separate row, with a checkbox to its left. Click the checkbox to make a device available during the installation process, or click the radio button at the left of the column headings to select or deselect all the devices listed in a particular screen. Later in the installation process, you can choose to install Red Hat Enterprise Linux onto any of the devices selected here, and can choose to automatically mount any of the other devices selected here as part of the installed system.
Note that the devices that you select here are not automatically erased by the installation process. Selecting a device on this screen does not, in itself, place data stored on the device at risk. Note also that any devices that you do not select here to form part of the installed system can be added to the system after installation by modifying the /etc/fstab file.

Important — chain loading

Any storage devices that you do not select on this screen are hidden from anaconda entirely. To chain load the Red Hat Enterprise Linux boot loader from a different boot loader, select all the devices presented in this screen.
when you have selected the storage devices to make available during installation, click Next and proceed to Section 9.10, “Initializing the Hard Disk”  Advanced Storage Options

From this screen you can configure an iSCSI (SCSI over TCP/IP) target or FCoE (Fibre channel over ethernet) SAN (storage area network). Refer to Appendix B, ISCSI disks for an introduction to iSCSI.
Advanced Storage Options
Advanced Storage Options.
Figure 9.8. Advanced Storage Options Enable Network Interfaces
Use this dialog to configure the network interfaces through which the system will connect to networked storage devices.
Enable Network Interface
Enable Network Interface
Figure 9.9. Enable Network Interface

If your network does not have DHCP enabled, or if you need to override the DHCP settings, select the network interface that you plan to use from the Interfaces menu. Clear the checkbox for Use dynamic IP configuration (DHCP). You can now enter an IPv4 address and netmask for this system in the form address / netmask, along with the gateway address and nameserver address for your network.
Click OK to accept these settings and continue.  Configure iSCSI Parameters
To configure an ISCSI target invoke the 'Configure ISCSI Parameters' dialog by selecting 'Add ISCSI target' and clicking on the 'Add Drive' button. Fill in the details for the ISCSI target IP and provide a unique ISCSI initiator name to identify this system. If the ISCSI target uses CHAP (Challenge Handshake Authentication Protocol) for authentication, enter the CHAP username and password. If your enviroment uses 2-way CHAP (also called "Mutual CHAP"), also enter the reverse CHAP username and password. Click the 'Add target' button to attempt connection to the ISCSI target using this information.
Configure ISCSI Parameters
Configure ISCSI Parameters.
Figure 9.10. Configure ISCSI Parameters

Note that you will be able to reattempt with a different ISCSI target IP should you enter it incorrectly, but to change the ISCSI initiator name you will need to restart the installation.  Configure FCoE Parameters
To configure an FCoE SAN, select Add FCoE SAN and click Add Drive.
On the menu that appears in the next dialog box, select the network interface that is connected to your FCoE switch and click Add FCoE Disk(s).
Configure FCoE Parameters
Configure FCoE Parameters
Figure 9.11. Configure FCoE Parameters

Data Center Bridging (DCB) is a set of enhancements to the Ethernet protocols designed to increase the efficiency of Ethernet connections in storage networks and clusters. Enable or disable the installer's awareness of DCB with the checkbox in this dialog.

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