Compact Software RAID® Implementation
WasabiRAID™ is a kernel level RAID driver optimized for Wasabi Certified™ BSD. It is compatible with any type of hard drive – including SATA, SATA II, SAS, SCSI, and Fibre Channel. WasabiRAID is powerful, secure, and flexible, making it ideal for DAS, NAS, and SAN storage solutions for SOHO, SMB, and Enterprise markets. The WasabiRAID developer’s kit includes the Wasabi RAID driver, documentation, and an API for integration with other applications or a GUI.

Power and Security
WasabiRAID is a powerful RAID engine that leverages the speed of modern processors to deliver maximum performance while protecting critical data. WasabiRAID supports RAID Levels 0, 1, 10, 5, 50, and spanning. Nested RAID levels can be created using existing WasabiRAID logical disks or by incorporating logical disks created with a RAID HBA. WasabiRAID also takes advantage of XOR engines to offload RAID 5 parity calculation, enabling it to efficiently run on smaller, low-power CPU’s. Features such as hot spare, hot swap, and background rebuilds maximize system uptime and minimize windows of vulnerability in the event of a hard disk failure.

Flexibility
WasabiRAID is perfect for applications large or small. WasabiRAID logical disks can consist of any combination of SATA, SAS, SCSI, and Fibre Channel physical disks, logical disks from RAID controllers - even other WasabiRAID logical disks. Read and write cache policy settings and stripe depth sizes are configurable to optimize performance for specific applications. If additional capacity is needed at a later time, WasabiRAID span mode makes it easy to dynamically expand volumes.

WASABI-RAID Features

RAID levels: span (JBOD), 0, 1, 5, 10, 50
WasabiRAID can create a RAID set with any combination of striping, mirroring and parity, combining levels 0, 1 and 5.

Spare support
Any number of spare disks can be configured and dynamically added or removed.

Controller spanning
WasabiRAID can use any number of disk controllers and create a RAID set across them.

Multiple drive and array types in the same RAID set
WasabiRAID talks to logical devices, so it is not restricted to using whole disks.
Drives can be partitioned, and individual partitions can be used as part of different RAID sets.
SATA and SCSI drives can be used in the same RAID set.

Caching
WasabiRAID can be configured to use the following stripe caching policies for RAID5:
* no cache
* write through
* write back

Set creation, rebuilds
RAID sets can be created online, no reboot is needed.
A RAID set with parity can be built in the background, while other system activity is running as usual.

Disk roaming support
WasabiRAID configures itself using only on-disk information; it does not rely on the controller to which a disk is attached.Disks can thus be moved between controllers, or an entire set can be moved to another device.

Error recovery
WasabiRAID will automatically rebuild failed sets, if possible. Rebuilds are possible with mirrored sets and parity sets. Spare disks will be automatically selected to replace the failed component.

Hot-swap
Failed, spare, and mirror disks can be added/removed during operation.