DVS Cine4K, Hardware Manual

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5-2
Cine4K Hardware Guide
5.1 Hard Disk Maintenance
This section deals with the possible event of a hard disk failure as well
as further hard disk maintenance tasks. First, some introductory infor-
mation about RAID are provided. After that follows a description how
to act when a hard disk fails.
5.1.1 Introduction to RAID
In a system where huge amounts of data are processed, large storage
capacities combined with high data throughputs are mandatory. To
provide both at the same time it is common practice in the area of video
and digital film to configure several hard disks together into a stripe set
or RAID. The IT world has defined several ’levels’ of RAID, most of
them providing some kind of data protection. However, to achieve the
best possible performance, the Cine4K provides no data protection be-
cause the surplus data transfer would slow down the system too much.
The main storage of the Cine4K comprises 24 hard disks and the data
is striped across these hard disks. Additionally, it provides three RAID
controllers that each connects a set of eight hard disks. The RAID con-
trollers are independent RAID systems.
You can identify the hard disks that are connected to a RAID controller
easily in the Cine4K because every two rows represent one disk set:
Figure 5-1: Disk sets in the DVS system
disk s
et
1
disk set 2
disk
se
t 3