KERNSAFE - iSCSI SAN Software and Storage Virtualization

RAID5 is a new feature in KernSafe iSCSI SAN which is software-based and can be created by creating Advanced Target. Software-based RAID5 provided by KernSafe Uses data striping in a technique designed to provide fault-tolerant data storage, but doesn't require duplication of data like RAID 1 and RAID 1E. RAID 5 has been the standard in server environments requiring fault tolerance. The RAID parity requires one disk drive per RAID set, so usable capacity will always be one disk drive les than the number of available disks in the configuration of available capacity - still better than RAID 1 which as only a 50% usable capacity.

Creating RAID5 Device

Follow the steps below to create a RAID5 device:

Step 1. Select Advanced Targets and click the Add button on the top toolbar of the management system, then the Create Advanced Target wizard popup up.

Choose 'Software RAID ' in the Configuration Type group.
Press the Next button to continue.

Step 2. Add simple devices to RAID5.

Press Add to select simple devices.

Check the devices you want to use and press Add to add them.

Note: Since Software-based RAID5 is as same as hardware-based RAID5, it at least consists of  three devices.

Press Next to continue.

Step3. Specify settings for the device group.

Configure the type, Stripe Size, Initialize Type.

Note: With RAID technology, data is striped across an array of devices. Each time the quantity of the data written to each device in the group called Stripe Size. Initialize Type  has two choice " Create new" and "Use existing device".

Step 4. Finish Creating iSCSI Target

Enter the Target Name.

Select an authorization mode, if you don't know how to it, you can see the topic Authorization Mechanism.
Press the Next button to continue.

Global Authorization: Indecate target will inherit authorization information (CHAP and IPFilters) from global, otherwise target will have its own authorization information.

Concurrent Access: Indicate target allow concurrent read-write operations.

Report Readonly: Indicate target will report as read only device if initiator don't have write access.

Press the Finish button to complete RAID5 creation.