Ubuntu Server Guide Changes, errors and bugs
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ubuntu-server-guide
- Bu sahifa navigatsiya:
- Advanced Installation Software RAID
- RAID Configuration
Using the installer
The installer is designed to be easy to use and have sensible defaults so for a first install you can mostly just accept the defaults for the most straightforward install: • Choose your language • Update the installer (if offered) • Select your keyboard layout • Do not configure networking (the installer attempts to configure wired network interfaces via DHCP, but you can continue without networking if this fails) • Do not configure a proxy or custom mirror unless you have to in your network • For storage, leave “use an entire disk” checked, and choose a disk to install to, then select “Done” on the configuration screen and confirm the install • Enter a username, hostname and password • Just select Done on the SSH and snap screens • You will now see log messages as the install is completed • Select restart when this is complete, and log in using the username and password provided There is more detailed documentation on all these options. Advanced Installation Software RAID Redundant Array of Independent Disks “RAID” is a method of using multiple disks to provide different balances of increasing data reliability and/or increasing input/output performance, depending on the RAID level being used. RAID is implemented in either software (where the operating system knows about both drives and actively maintains both of them) or hardware (where a special controller makes the OS think there’s only one drive and maintains the drives ‘invisibly’). The RAID software included with current versions of Linux (and Ubuntu) is based on the ‘mdadm’ driver and works very well, better even than many so-called ‘hardware’ RAID controllers. This section will guide you through installing Ubuntu Server Edition using two RAID1 partitions on two physical hard drives, one for / and another for swap. RAID Configuration Follow the installation steps until you get to the Guided storage configuration step, then: Select Custom storage layout. Create the /boot partition in a local disk. So select one of the devices listed in available devices and Add GPT Partition. Next, enter the partition size, then choose the desired Format (ext4) and /boot as mount point. And finally, select Create. Now to create the RAID device select Create software RAID (md) under AVAILABLE DEVICES. Add the name of the RAID disk (the default is md0). For this example, select “1 (mirrored)” in RAID level, but if you are using a different setup choose the appropriate type (RAID0 RAID1 RAID5 RAID6 RAID10). Note In order to use RAID5, RAID6 and RAID10 you need more than two drives. Using RAID0 or RAID1 only two drives are required. 3 Select the devices that will be used by this RAID device. The real devices can be marked as active or spare, by default it becomes active when is selected. Select the Size of the RAID device. Select Create. The new RAID device (md0 if you did not change the default) will show up in the available devices list, with software RAID 1 type and the chosen size. Repeat steps above for the other RAID devices. Download 1.27 Mb. Do'stlaringiz bilan baham: |
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