3.3 – RAID Flashcards
If server dies, use RAID system because
–One drive dies, other one kicks in
–Allows computer to keep going if one drive dies
–Hard drives are one of the 1st to fail because of moving parts
RAID Combines Drive for Computer
–Computer sees them as ONE drive
–Computer writes data to them
–Some RAIDs give redundancy
RAID = Redundant Array of Independent [Inexpensive] Disks
–Combines identical hard drive to either increase storage capacity & performance, provide data protection or both
–RAID 0, 1, 5, 10
–RAID is not specific to any kind of drive
IDE, SATA [common], M.2, PCIe, USB or Thunderbolt
–SSD RAID is NOT common
Hardware RAID
a. Motherboard built-in RAID
b. PCI / PCIe RAID controller cord
c. USB / Thunderbolt external RAID encloser
Software RAID
a. Windows = Dynamic Disk & Storage Spaces
b. MacOS = Disk utility can be used to create RAID arrays
c. Linux = Built-in to the Linux kernal as a standard
JBOD = Just a Bunch of Disks
–Took all drives & put into a machine
–Hard Drive & NVME – NOT raided, just connected