How to set up a software RAID

       RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks. A classic RAID 1 mirrored pair contains two disks. The array will continue to operate so long as at least one member drive is operational.

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How to restore grub2

1) Boot a server in rescue mode2) Check partitions[root@rescue /]# fdisk -lDisk /dev/sda: 3.7 TiB, 4000787030016 bytes, 7814037168 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisklabel type: gptDisk identifier: 961524F0-9337-4FC8-B4AD-C65D8750BF58Device          Start        End    Sectors  Size Type/dev/sda1        2048    1048575    1046528  511M EFI System/dev/sda2 […]

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What is backup?

Backup is a reserve copy of the data, from which the original data can be restored. Backups are usually done so that in case the working copy is lost, it can be restored.

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How to install xcache on CentOS 6

XCache is an extension for PHP that caches its operational code. It speeds up loading time of the pages that had already been visited and overall increases the website’s loading speed.

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What is a subdomain?

Subdomain – domain of a third level or lower. For example, in chrome.google.com, chrome – is a subdomain. Unlike a regular domain, which is paid for and needs to be registered, a subdomain can be created easily in the control panel. Subdomains are used for services that are beyond the functionality of the main website. Also, sometimes […]

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