When you log in for the first time, the Menu Bar is opened and locked at the Manage Storage tab in the Add Storage Screen shown below.
1. The first task you must complete before the other menus become active is to Setup your Storage Pool.
- Available options are RAID-0, RAID-1, RAID-5, and RAID-6.
- RAID-1 requires a minimum of 2 disks, RAID-5 requires a minimum of 3 disks, and
- RAID-6 requires a minimum of 4 disks.
- In RAID-1 and RAID-5, the total storage available for use will be reduced by 1 disk worth of space used for parity and to provide redundancy.
- A maximum of 1 disk may be lost within a RAID-1 or RAID-5 set without losing Storage Pool data integrity.
- In RAID-6, the total storage available for use will be reduced by 2 disks worth of space used for parity and to provide redundancy. A maximum of 2 disks may be lost within a RAID-6 set without losing Storage Pool data integrity.
- RAID-0 provides no redundancy and the loss of any disk in the Storage Pool will corrupt its data integrity. RAID-0 is not recommended for Production devices.
- Regardless of the RAID level selected, the Storage Pool must be expanded by exactly the same number of disks chosen during the initial setup, using the same RAID level.
- When adding additional storage sets, the size of the new disks being added does not have to be the same as the original disk set, but the set must consist of the same number of disks.
- For example, if you choose to create a RAID-5 pool with 3 1TB disks and later want to expand the pool, you could add 3 additional 2TB disks to expand the pool.
- If you want to expand a RAID-0 pool by single disks, create the pool with 1 disk initially and then add disks 1 at a time to achieve your storage capacity target.
- Note: RAID-0 is not recommended or supported for Production usage. Loss of any disk in a RAID-0 Storage Pool will destroy all data in the pool!
- Using a larger number of disks in a Storage Pool set improves performance, as data is striped across multiple spindles.
- Creating Storage Pools by combining multiple sets of disks improves performance even more, at the expense of extra parity space consumption, as disk sets are stripped together using RAID-0.
- For example, 2 3-Disk RAID-5 sets combined into the storage pool is equivalent to RAID-50 or RAID5+0.
- Each disk set is independently redundant, and in the case of RAID-5 could survive the loss of 1 disk in each set; total usable capacity from the 6 disks assigned to the pool is only 4 disks worth of storage, as there is 1 disk worth of parity in each RAID set.
· After selecting the RAID level, select the Compression level for the pool.
LZ mode has slightly lower compression but higher performance.
GZIP mode has higher compression at the expense of lower performance.
LZ is recommended for all devices.
- Expand the Unused Disks pane and select the desired disks to be used by the pool. If you have greater than 10 disks change your view to show 100 disks from the dropdown menu. Note: It is not recommended to have more than 10 disks in a single RAID set.
- Once you have selected the correct RAID level, Compression, and storage disks, click Create Storage to create the Storage Pool. The Storage Status section at the top of the page will list the availability status and pool configuration once the pool has successfully been created.