2. ICMP functionality
Image 2-4
CAUTION: ARAID5configuration 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.
CAUTION: The loss of one disk causes no serious consequences on the ICMP. But ac-
tion 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 t
o the loss of the
second disk while the first has not been rebuilt!
A failed drive should be replaced as soon as possible.
About “R AID 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. 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 it is necessary to retrieve from the content distributor the
KDMs corresponding to the content and the new ICMP.
HDD storage capacity
Make sure that all HDDs in the ICMP HDD set have the same storage capacity. See label on top of the
HDD to know the storage capacity.
R5905722 ICMP 09/11/2016
11
To Next Page
Loading...
Need help?
General