Grass Valley K2 Media Client System Guide v.3.3 - Manual (Page 122)

122 K2 Media Client System Guide June 9, 2009
Chapter 4 Managing Internal Storage
Changing RAID type
You can change the media storage on an internal storage K2 Media Client to be either
RAID 1 or RAID 0, as follows:
• RAID 1 — Recommended for the ten media drive option. Not recommended for
the five media drive option. With RAID 1, the ten media drives are configured as
five LUNs, each of which is a mirrored pair of drives. The capacity of each LUN
is roughly equivalent to the capacity of one drive, so your total media storage
capacity is equivalent to the capacity of five 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 — Recommended for either the ten media drive option or the five media
drive option. 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.
To change internal storage RAID-type configuration, do the following:
1. If you need to retain media, transfer it to another K2 system or otherwise back it up.
2. Unbind all media LUNs, as instructed in “Unbind LUN” on page 119 . Do not
unbind LUN 0, as this is the system drive.
3. Bind media drives, using the procedure “Bind Luns” on page 120 , 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.
4. Make a new file system, as explained in “Making a new media file system” on
page 122 .
5. If you backed up your media, you can now transfer it back.
Making a new media file system
1. Click Tools | Make New File System .
2. If the K2 Media Client is online, messages appear “…offline mode now?” and
“…continue?”. Click Yes to put the K2 Media Client in offline mode.