Barco SP2K-S, Installation Manual

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75 R5913197 /02 SP2K-S
7.2 ICMP-X HDD
About ICMP-X HDD
The three HDDs (local storage) in the ICMP-X, are set up in a RAID 5 configuration. This storage technique,
that combines multiple HDD components into a logical unit, manages enough redundancy information to
continue to operate properly after the loss of one HDD.
Image 7–6
CAUTION: A RAID 5 configuration with three HDDs allows a maximum loss of one disk. With the
simultaneous loss of more than one HDDs, data is lost and the RAID must be completely initialized
again after replacement of the defect HDDs with new HDDs!
About degraded mode
When a RAID array experiences the failure of one disk, it enters in degraded mode. Content storage and
playback remains available on the ICMP-X.
CAUTION: The loss of one disk causes no serious consequences on the ICMP-X. But action must
be taken quickly because the loss of a second disk will make the RAID system broken. The main
cause of the total loss of RAID is due in most cases to the loss of the second disk while the first has
not been rebuilt!
A failed drive should be replaced as soon as possible.
About “RAID recovery” process
The restoration from degraded to normal condition of the RAID 5 system is done automatically. When the
RAID controller detects a new HDD to replace the failed disk the recovery procedure starts automatically.
CAUTION: The automatic process does not work if more than one disk is lost. In that case the RAID
must be completely initialized again!
About RAID broken
When more than one HDD is out of order, the RAID is considered as 'broken' and the content is lost. The failed
HDDs must be changed and a new RAID must be created.
Exchange or re-use of a disk set
It's possible to have several sets of disks with one ICMP or to reuse a complete set of disks coming from
another projector with ICMP.
How to exchange:
• Exchange of HDD set between two ICMP-Xs with the same storage controller:
It is sufficient to insert the three HDDs, from a valid RAID array, and let the system explore the new RAID.
The mounting order of the HDDs and the HDD slots do not matter. Of course, when using HDDs from
another ICMP-X it is necessary to retrieve from the content distributor the KDMs corresponding to the
content and the new ICMP-X.
• Exchange of HDD set between two ICMP-Xs with a different storage controller:
ICMP-X