Kontron KISS Stor 1 - Manual (Page 13)

Introduction to RAID Level
12 KISS-Stor 1 – User’s Manual
Introduction to RAID Level
The KISS-Stor 1 can support the RAID levels 1.
RAID 1
RAID 1 is commonly referred to as Disk Mirroring, Disk Shadowing or Disk
Duplexing as all data is duplicated across both disks. RAID 1 can only be
performed with two hard drives. As data is identical on both disks, storage
capacity is that of the smaller disk. RAID 1 has poor performance for write
operations but very high performance for read intensive operations.
The storage capacity is determined by the smaller drive in the array. That
capacity is then applied to format all other drives in the array. If using a 40 GB
and 60 GB drive in a RAID 1 array, your system will see one drive of 40 GB
[(1 disks x 40 GB) = 40 GB].
Fig. 1: Example for RAID 1 array with two hard disks