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What happens to a RAID 1 array if one of the disks fails?
Yes, you could still use the raid drive with one failed drive. It will continue to run until a replacement drive is inserted at which time the array will be rebuilt. NOTE: RAID is not a subtitute for backups. If you accidently delete a file or get a virus, it will effect all drives in the array.
How many disks does RAID 1 have?
two disks
RAID 1 can be implemented through either software or hardware. A minimum of two disks is required for RAID 1 hardware implementations. With software RAID 1, instead of two physical disks, data can be mirrored between volumes on a single disk.
Why do you need RAID 1 in Linux?
Setup Raid1 in Linux Mirrors are created to protect against data loss due to disk failure. Each disk in a mirror involves an exact copy of the data. When one disk fails, the same data can be retrieved from other functioning disk.
How many disks do you need for RAID 1?
RAID Mirroring means an exact clone (or mirror) of the same data writing to two drives. A minimum two number of disks are more required in an array to create RAID1 and it’s useful only, when read performance or reliability is more precise than the data storage capacity.
Can a RAID 1 drive be migrated to a SDB2 drive?
/dev/md1 (raid 1) made up of sde2 and sdf2, to be migrated to sda2 and sdb2 You’ll be able to get the drive designations in order by re-arranging the cables/drives/ports before starting the new procedure (Linux raid is smart enough to recognise its drives no matter the ports/connectors they’re on).
Can you install an operating system on software RAID?
When you boot up the computer, you are going to see an option that allows you to configure the RAID. You can install an operating system on top of hardware RAID which can increase uptime. Software RAID requires you already installed an operating system.