which earn me advertising fees or commissions.
As an Amazon Associate I earn from qualifying purchases.
B&H Photo...
Amazon
As an Amazon Associate I earn from qualifying purchases.
High capacity, high-performance fault-tolerant storage for photography and video.
Non-RAID or RAID-0/1/4/5/10.
Capacities up to 64 Terabytes!
Why Use RAID-1 Mirror?
A RAID-1 mirror set is a fault-tolerant flavor of RAID that can be understand as identical copies. The user sees one volume and icon, but there are two or more drives, each an identical copy
Typically a RAID-1 mirror uses dual drives, but a mirror can be made of 2/3/4/5/.. drives. RAID-1 offers fault tolerance by using two or more drives as exact copies:
- Little or no difference in performance over a single drive for writes, possible modest gains for reads.
- Capacity remains that of a single drive.
- Tolerates the failure of all but one drives in each mirror set. A dual-drive mirror can tolerate one drive failure, a 3-drive mirror can tolerate a 2-drive failure, etc.
- Software RAID-1 increases use of bandwidth for writes (double usage for a 2-drive mirror, triple usage for 3-drive mirror, etc).
Users looking for maximum fault tolerance can create a 3-drive or even 4-drive or more RAID-1 mirror. There is no performance gain to be had, except a modest one for readds.
Shown below to emphasize the point is an 8-drive RAID-1 mirror, which would allow an incredible 7 drive failures! That’s 8 X 5TB as shown, with capacity of 5TB, since there are 8 identical copies on 8 drives.

Whereas Disk Utility simply kills an out of sync mirror drive, SoftRAID has a smart rebuild feature which can even be used for a backup-type purpose (pull a drive, then restore later):

8-bay Thunderbolt 3
2.5 or 3.5 inch hard drives, NVMe SSD, USB-C, USB-A, DisplayPort 1.4, SD slot, PCIe slot, 500W power supply.
Non-RAID or RAID-0/1/4/5/10.
Capacities up to 128 Terabytes!
6000 MB/sec!
Mac or PC.
Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
Ultra-high performance across entire capacity, outperforms the competition.
Tiny, bus-powered, rugged, compact!
Eight-bay Thunderbolt 3 high-performance storage for photo and video.
Hard drives or SSDs.
Non-RAID or RAID-0/1/4/5/10.
Capacities up to 128 Terabytes!