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Changing RAID type for internal storage

On an internal storage K2 Summit 3G system, you can change the internal media storage to be either RAID 1 or RAID 0, as follows:

  • RAID 1 — If Solid State Drives (SSD), RAID 1 is required. If Hard Disk Drives (HDD), RAID 1 is recommended for the “full” media drive option, which is eight hard drives on a first generation K2 Summit system. Not recommended for media drive options with fewer hard drives. With RAID 1, two media drives are configured as a mirrored pair to make one LUN. The capacity of each LUN is roughly equivalent to the capacity of one drive, so your total media storage capacity is approximately 50% of the sum total of all the drives. Since drives are mirrored in each LUN, your media is protected against drive failure. If a drive fails, the other drive in the LUN provides continued media access while you replace the failed drive.
  • RAID 0 — Required on K2 Solo Media Server. With RAID 0 there is no mirroring, so your total media storage capacity is roughly equivalent to that of all drives combined. However, your media has no RAID protection against drive failure. If one media drive fails, the entire group of drives fails and you lose all your media.

Depending on your needs for capacity versus protection, you can change from one RAID type to another, as explained in the following procedure.

Note: This procedure loses all media.
  1. If you need to retain media, transfer it to another K2 system or otherwise back it up.
  2. Unbind all media LUNs.
  3. Restart.
  4. Bind media drives, as one of the following:
    • RAID 0 — Bind each media drive as a RAID 0 LUN.
    • RAID 1 — Bind the ten drives as five RAID 1 LUNs.
  5. Restart.
  6. Make a new file system.
  7. If you backed up your media, you can now transfer it back.

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