Storage, Filesystems (again), Backups/Recovery

Storage devices:

• Storage devices
  • Hard disks 101
  • Disk devices
• Disk Partitioning
• Tools/commands
• See previous discussion on data recovery
• df -k  :  report disk usage
• df -T : show the filesystem type
  
• du -k  :  report du space
  
• fsck - to fix a corrupted disk
• fdisk- to partition a disk
• mount -  mounts a file system  (issue a 'df -k' to see current mount points)

• RAID:   redundant arrays of inexpensive disks
• Overview
• RAID 0 : Boosts server performance by 'striping' access requests across >1 drives But no error protection....use RAID 1 or RAID 5 instead!
• RAID 1: Disk mirroring (add a second drive)
• RAID 5: Better Mirroring option than RAID 1, provides correction with parity (best to use 3 drives)
• Use Ubuntu server ISO if you want RAID....everything is installed
• Build your own RAID with 2 drives:
  • Raid 1
  • Raid 5

• Logical Volume Mgmt

Filesystems

• Turning Partitions into filesystems
• Linux filesystems
  • EXT family
• Network file systems
  

Corrupted/Failed filesystems

• fsck, gparted, e2fsck - do not run on mounted partitions
  • articles
    • https://www.maketecheasier.com/check-repair-filesystem-fsck-linux/
      
• Misc. articles
  
• https://wiki.archlinux.org/index.php/Disk_Cloning
• https://wiki.archlinux.org/index.php/File_Recovery
• Filesystem Troubleshooting
• Storage and recovery of disks
• fsck, gparted, e2fsck - do not run on mounted partitions
  • articles
    • https://www.maketecheasier.com/check-repair-filesystem-fsck-linux/
      
• Misc. articles
  
• https://wiki.archlinux.org/index.php/Disk_Cloning
• https://wiki.archlinux.org/index.php/File_Recovery
  

Last update: 1/28/2017