{"id":374,"date":"2016-12-28T12:21:24","date_gmt":"2016-12-28T12:21:24","guid":{"rendered":"https:\/\/visworlditsolution.wordpress.com\/?p=374"},"modified":"2016-12-28T12:21:24","modified_gmt":"2016-12-28T12:21:24","slug":"how-to-configure-raid-5-in-redhat-linux-server","status":"publish","type":"post","link":"https:\/\/linux.thingsomething.com\/index.php\/2016\/12\/28\/how-to-configure-raid-5-in-redhat-linux-server\/","title":{"rendered":"how to configure raid 5 in redhat linux server"},"content":{"rendered":"<p>Hii guys today we will discuss about RAId5 .RAID 5 is a method of storage management in linux server. In this article \u00a0we will learn how to configure RAID 5 in linux server \u00a0if u want to know what is RAID? and what is RAID 0 RAID1 so click on my link and visit\u00a0<a href=\"https:\/\/visworlditsolution.wordpress.com\/2016\/12\/15\/what-is-raid-0-and-how-to-configur-in-redhat-linux-server\/\" rel=\"bookmark\">What is raid 0 ? and how to Configur in redhat linux\u00a0server<\/a>\u00a0<a href=\"https:\/\/visworlditsolution.wordpress.com\/2016\/12\/15\/what-is-raid-0-and-how-to-configur-in-redhat-linux-server\/\" rel=\"bookmark\">What is raid 0 ? and how to Configur in redhat linux\u00a0server<\/a><\/p>\n<p>basically RADID 5 in required 3 heard disk if one is crashes then other disk will be take place automaticly .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-379\" src=\"https:\/\/visworlditsolution.files.wordpress.com\/2016\/12\/raid-5.png?w=300\" alt=\"raid 5\" width=\"785\" height=\"418\" \/><\/p>\n<p>So lets go through the steps to configure raid level 5 in linux server<\/p>\n<pre><strong>[root@localhost ~]# fdisk \/dev\/sda<\/strong>\nThe number of cylinders for this disk is set to 4177.\nThere is nothing wrong with that, but this is larger than 1024,\nand could in certain setups cause problems with:\n1) software that runs at boot time (e.g., old versions of LILO)\n2) booting and partitioning software from other OSs\n   (e.g., DOS FDISK, OS\/2 FDISK)\nCommand (m for help): <strong>m<\/strong>\nCommand action\n   a   toggle a bootable flag\n   b   edit bsd disklabel\n   c   toggle the dos compatibility flag\n   d   delete a partition\n   l   list known partition types\n   m   print this menu\n   n   add a new partition\n   o   create a new empty DOS partition table\n   p   print the partition table\n   q   quit without saving changes\n   s   create a new empty Sun disklabel\n   t   change a partition's system id\n   u   change display\/entry units\n   v   verify the partition table\n   w   write table to disk and exit\n   x   extra functionality (experts only)\nCommand (m for help):<strong> p<\/strong>\nDisk \/dev\/sda: 34.3 GB, 34359738368 bytes\n255 heads, 63 sectors\/track, 4177 cylinders\nUnits = cylinders of 16065 * 512 = 8225280 bytes\n   Device Boot      Start         End      Blocks   Id  System\n\/dev\/sda1   *           1        3315    26627706   83  Linux\n\/dev\/sda2            3316        3697     3068415   82  Linux swap \/ Solaris\n\/dev\/sda4            3698        4177     3855600    5  Extended\n\/dev\/sda5            3698        3722      200781   fd  Linux raid autodetect\n\/dev\/sda6            3723        3747      200781   fd  Linux raid autodetect\nCommand (m for help): n\nCommand action\n   l   logical (5 or over)\n   p   primary partition (1-4)\n<strong>l<\/strong>\nFirst cylinder (3748-4177, default 3748):\nUsing default value 3748\nLast cylinder or +size or +sizeM or +sizeK (3748-4177, default 4177): <strong>+100M<\/strong>\nCommand (m for help): <strong>n<\/strong>\nCommand action\n   l   logical (5 or over)\n   p   primary partition (1-4)\n<strong>l<\/strong>\nFirst cylinder (3748-4177, default 3748):\nUsing default value 3748\nLast cylinder or +size or +sizeM or +sizeK (3748-4177, default 4177): <strong>+100M\n<\/strong>Command (m for help): <strong>n<\/strong>\nCommand action\n   l   logical (5 or over)\n   p   primary partition (1-4)\n<strong>l<\/strong>\nFirst cylinder (3761-4177, default 3761):\nUsing default value 3761\nLast cylinder or +size or +sizeM or +sizeK (3761-4177, default 4177): +100M\nCommand (m for help): n\nCommand action\n   l   logical (5 or over)\n   p   primary partition (1-4)\n<strong>l<\/strong>\nFirst cylinder (3774-4177, default 3774):\nUsing default value 3774\nLast cylinder or +size or +sizeM or +sizeK (3774-4177, default 4177):<strong> +100M<\/strong>\nCommand (m for help):<strong> p<\/strong>\nDisk \/dev\/sda: 34.3 GB, 34359738368 bytes\n255 heads, 63 sectors\/track, 4177 cylinders\nUnits = cylinders of 16065 * 512 = 8225280 bytes\n   Device Boot      Start         End      Blocks   Id  System\n\/dev\/sda1   *           1        3315    26627706   83  Linux\n\/dev\/sda2            3316        3697     3068415   82  Linux swap \/ Solaris\n\/dev\/sda4            3698        4177     3855600    5  Extended\n\/dev\/sda5            3698        3722      200781   fd  Linux raid autodetect\n\/dev\/sda6            3723        3747      200781   fd  Linux raid autodetect\n\/dev\/sda7            3748        3760      104391   83  Linux\n\/dev\/sda8            3761        3773      104391   83  Linux\n\/dev\/sda9            3774        3786      104391   83  Linux\nCommand (m for help):<strong> t<\/strong>\nPartition number (1-9): 7\nHex code (type L to list codes): <strong>l<\/strong>\n 0  Empty           1e  Hidden W95 FAT1 80  Old Minix       bf  Solaris\n 1  FAT12           24  NEC DOS         81  Minix \/ old Lin c1  DRDOS\/sec (FAT-\n 2  XENIX root      39  Plan 9          82  Linux swap \/ So c4  DRDOS\/sec (FAT-\n 3  XENIX usr       3c  PartitionMagic  83  Linux           c6  DRDOS\/sec (FAT-\n 4  FAT16 &lt;32M      40  Venix 80286     84  OS\/2 hidden C:  c7  Syrinx\n 5  Extended        41  PPC PReP Boot   85  Linux extended  da  Non-FS data\n 6  FAT16           42  SFS             86  NTFS volume set db  CP\/M \/ CTOS \/ .\n 7  HPFS\/NTFS       4d  QNX4.x          87  NTFS volume set de  Dell Utility\n 8  AIX             4e  QNX4.x 2nd part 88  Linux plaintext df  BootIt\n 9  AIX bootable    4f  QNX4.x 3rd part 8e  Linux LVM       e1  DOS access\n a  OS\/2 Boot Manag 50  OnTrack DM      93  Amoeba          e3  DOS R\/O\n b  W95 FAT32       51  OnTrack DM6 Aux 94  Amoeba BBT      e4  SpeedStor\n c  W95 FAT32 (LBA) 52  CP\/M            9f  BSD\/OS          eb  BeOS fs\n e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a0  IBM Thinkpad hi ee  EFI GPT\n f  W95 Ext'd (LBA) 54  OnTrackDM6      a5  FreeBSD         ef  EFI (FAT-12\/16\/\n10  OPUS            55  EZ-Drive        a6  OpenBSD         f0  Linux\/PA-RISC b\n11  Hidden FAT12    56  Golden Bow      a7  NeXTSTEP        f1  SpeedStor\n12  Compaq diagnost 5c  Priam Edisk     a8  Darwin UFS      f4  SpeedStor\n14  Hidden FAT16 &lt;3 61  SpeedStor       a9  NetBSD          f2  DOS secondary\n16  Hidden FAT16    63  GNU HURD or Sys ab  Darwin boot     fb  VMware VMFS\n17  Hidden HPFS\/NTF 64  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE\n18  AST SmartSleep  65  Novell Netware  b8  BSDI swap       <strong>fd  Linux raid auto<\/strong>\n1b  Hidden W95 FAT3 70  DiskSecure Mult bb  Boot Wizard hid fe  LANstep\n1c  Hidden W95 FAT3 75  PC\/IX           be  Solaris boot    ff  BBT\nHex code (type L to list codes):<strong> fd<\/strong>\nChanged system type of partition 7 to fd (Linux raid autodetect)\nCommand (m for help):<strong> t<\/strong>\nPartition number (1-9):<strong> 8<\/strong>\nHex code (type L to list codes): <strong>fd<\/strong>\nChanged system type of partition 8 to fd (Linux raid autodetect)\nCommand (m for help): <strong>t<\/strong>\nPartition number (1-9): <strong>9<\/strong>\nHex code (type L to list codes): <strong>fd<\/strong>\nChanged system type of partition 9 to fd (Linux raid autodetect)\nCommand (m for help): <strong>p<\/strong>\nDisk \/dev\/sda: 34.3 GB, 34359738368 bytes\n255 heads, 63 sectors\/track, 4177 cylinders\nUnits = cylinders of 16065 * 512 = 8225280 bytes\n   Device Boot      Start         End      Blocks   Id  System\n\/dev\/sda1   *           1        3315    26627706   83  Linux\n\/dev\/sda2            3316        3697     3068415   82  Linux swap \/ Solaris\n\/dev\/sda4            3698        4177     3855600    5  Extended\n\/dev\/sda5            3698        3722      200781   fd  Linux raid autodetect\n\/dev\/sda6            3723        3747      200781   fd  Linux raid autodetect\n\/dev\/sda7            3748        3760      104391   fd  Linux raid autodetect\n\/dev\/sda8            3761        3773      104391   fd  Linux raid autodetect\n\/dev\/sda9            3774        3786      104391   fd  Linux raid autodetect\nCommand (m for help):<strong> w<\/strong>\nThe partition table has been altered!\nCalling ioctl() to re-read partition table.\nWARNING: Re-reading the partition table failed with error 16: Device or resource busy.\nThe kernel still uses the old table.\nThe new table will be used at the next reboot.\nSyncing disks.\n<strong>[root@localhost ~]# partprobe \/dev\/sda<\/strong>\n[root@localhost ~]# mdadm --create \/dev\/md5 --level=5 --raid-devices=3 \/dev\/sda7 \/dev\/sda8 \/dev\/sda9\nmdadm: array \/dev\/md5 started.<\/pre>\n<p>then we will create raid5 like this<br \/>\n<strong>[root@localhost ~]# mdadm &#8211;create \/dev\/md5 &#8211;level=5 &#8211;raid-devices=3 \/dev\/sda7 \/dev\/sda8 \/dev\/sda9<\/strong><br \/>\nmdadm: array \/dev\/md5 started<\/p>\n<p>you can also check raid5<\/p>\n<pre><strong>[root@localhost ~]# cat \/proc\/mdstat\nPersonalities : [raid6] [raid5] [raid4]\nmd5 : active raid5 sda9[2] sda8[1] sda7[0]\n      208640 blocks level 5, 64k chunk, algorithm 2 [3\/3] [UUU]<\/strong><\/pre>\n<p>&nbsp;<\/p>\n<p>thank you<\/p>\n<p>by vishnu sharma<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hii guys today we will discuss about RAId5 .RAID 5 is a method of storage management in linux server. In this article \u00a0we will learn &hellip; <span class=\"ml-btn\"><a href=\"https:\/\/linux.thingsomething.com\/index.php\/2016\/12\/28\/how-to-configure-raid-5-in-redhat-linux-server\/\" class=\"more-link\">Read More<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[8,16],"tags":[30,87,183,234],"class_list":["post-374","post","type-post","status-publish","format-standard","hentry","category-linux-rhel5","category-storage","tag-about-raid-5","tag-how-to-configure-raid-5-in-redhat-linux-server","tag-raid-5-configure-commands","tag-what-is-raid-5"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/posts\/374"}],"collection":[{"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/comments?post=374"}],"version-history":[{"count":0,"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/posts\/374\/revisions"}],"wp:attachment":[{"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/media?parent=374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/categories?post=374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/linux.thingsomething.com\/index.php\/wp-json\/wp\/v2\/tags?post=374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}