Can you RAID 5 with 3 drives?
Can you RAID 5 with 3 drives?
Your data is spread across all the drives in the RAID along with information that will allow your data to be recovered in case of a single drive failure. At least three drives are required for RAID 5.
How is RAID 5 storage calculated?
A simple rule for RAID 5 calculation is to take the amount of capacity on the disk drive (in this case 146 GB) and reduce it by about 15% to get an idea of the usable amount that will be available to hosts.
How many drives do I need for RAID 5?
three drives
RAID 5 provides fault tolerance and increased read performance. At least three drives are required. RAID 5 can sustain the loss of a single drive. In the event of a drive failure, data from the failed drive is reconstructed from parity striped across the remaining drives.
Which RAID is best for 3 drives?
Selecting the Best RAID Level
| RAID Level | Redundancy | Minimum Disk Drives |
|---|---|---|
| RAID 1E | Yes | 3 |
| RAID 10 | Yes | 4 |
| RAID 5 | Yes | 3 |
| RAID 5EE | Yes | 4 |
How much space do you lose in RAID 5?
RAID 5 results in the loss of storage capacity equivalent to the capacity of one hard drive from the volume. For example, three 500GB hard drives added together comprise 1500GB (or roughly about 1.5 terabytes) of storage.
How much storage do you lose in RAID 5?
Do all drives have to be the same size for RAID 5?
Do all drives have to be the same model and capacity for a RAID 5 array? The short answer is No, the drives don’t have to be exactly the same. The longer explanation is that for compatibility reasons, we usually recommend using the same model.
Why RAID 5 is bad?
Using RAID 5 is portrayed as an unreasonable risk to the availability of your data. As you know RAID 5 can tollerate a single drive failure. If a second drive dies and the first drive was not yet replaced or rebuild, you lose all contents of the array.
