Can you have RAID 1 with 4 drives?
You can use as many drives as you want for RAID1. They will all be mirrored, and written on at the same time, and be exact copies of each other. The fact that there isn’t a card that do more than x drives doesn’t meant anything about the concept.
How many disks can be used for RAID 1?
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.
What RAID should I use for 4 disks?
It should be noted that the most optimal RAID with four drives is RAID 10. The disk segment size is the size of the smallest disk in the array. And if, for example, an array with two 250 GB drives and two 400 GB drives can create two mirrored 250 GB disk segments, which adds up to 500 GB for the array.
Can you add drives to RAID 1?
Expanding a RAID volume by adding hard drives is only available with RAID 0, 1, 5, and 6 configurations. RAID volume expansion will not work with other RAID configurations, such as RAID 00, 10, 50, or 60. If you want to expand RAID 00, 10, 50, or 60, you will have to first create a backup of your system.
Does RAID 1 support hot spare?
Supported RAID levels are RAID 0, RAID 1, RAID 5, RAID 6, or RAID 10. RAID 0 arrays have no redundancy and do not support hot-spare takeover. RAID 1 provides disk mirroring, which duplicates data between two drives.
Does RAID1 need a hot spare?
Hot spare is a drive that acts as a stand by drive in RAID 1, RAID 5 or RAID 6 volume. It is fully functional drive that contains no data and is not used during normal operation. If a drive from the volume fails, the controller reconstructs the data from the failed drive to the hot spare drive.
Can I create a RAID1 without losing data?
In short: you don’t!. The above answer is true when you think of keeping the data in the drive. When building a raid all data will be erased.
Can you hot swap a RAID 1 disk?
If you’re interested in using hot-swapping in a RAID configuration, your best option is to use RAID Level 1 architecture, also know as “disk mirroring.” With RAID 1, all of the server data is mirrored onto multiple disks.