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Maintenance
Hard Disk Maintenance
5.1 Hard Disk Maintenance
This section deals with the possible event of a hard disk failure. First,
some introductory information about RAID are provided. After that fol-
low descriptions 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.
The RAID feature makes the R&S DVS system tolerant of disk failures.
Even with a broken disk operations can still be continued and, once the
failed disk has been replaced, the missing data can be recovered easily.
The data protection is provided by (a) RAID controller(s) installed inside
the system for the set of hard disks (RAID array) that is connected to it.
You can identify the hard disks that are connected to a RAID controller
easily in the R&S DVS system because every disk tray represents one
LUN/RAID array (system/metadata hard disks excluded):
With the available RAID feature the R&S DVS system can withstand
disk failures without losing data or access to data.
5-2
system/metadata
hard disks
Figure 5-1: System/metadata hard disk on a hard disk tray
SpycerBox Cell | Hardware Guide | Version 1.0
Rohde & Schwarz DVS GmbH
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