It is relatively easy to replace Raid one drive with a larger Raid one drive. You must turn off your system, and take out the drive, and place the larger drive in its place. Next, you turn on the system, and install the larger drive.
RAID 10
A group of hard drives assembled into a RAID array is often referred to as, well, a "RAID array" a "RAID stack" or a "RAID cluster."
Every RAID level stripes data across multiple drives, which improves performance compared to using a single disk. RAID 0, RAID 1, RAID 1+0, RAID 5, RAID 6, etc. all have better performance than a single disk. Other than RAID 0, all other RAID levels provide fault tolerance. RAID 1, RAID 1+0, RAID 5, RAID 6, etc. all have fault tolerance.
Check with your motherboard manual (if it has onboard RAID), or check with your RAID controller's manual to see if it supports setting up single drives and not having a raid configuration.
RAID stands for a redundant array of independent disks. Thus, a group of two or more hard disks comprise a RAID, or array of physically separate drives.
For Raid 5 all the hard drives have to be of the same speed.
That is RAID 1. It uses two drives with identical data so if one fails, you have the other drive. One variation of RAID 1 used by certain controllers is to write as RAID 1 but read more like RAID 0 (but without the striping). That way, you have the write protection of a mirrored set, but can use the two drives to do interleaved reads for a read performance boost.
RAID 0 is generally the fastest RAID level. It uses two hard drives at the same time, with each drive sending and receiving different data. The data is usually "striped."
It is a combination of RAID 1 and RAID 0. It takes at least four disks for RAID 10. Refer to A+ at Ch. 6 pages 258.
RAID 1 is the most fault tolerant, as all drives have to fail to lose data.
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Raid 1 is mirroring.