Maintenance
SSD Disk Maintenance
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CLIPSTER | Hardware Guide | Hardware Generation V+
Rohde & Schwarz DVS GmbH
SSD Disk Maintenance
This section deals with the possible event of a SSD disk failure.
The following topics are covered:
■
Introduction to RAID (page 54)
■
Identifying a Defective SSD Disk (page 55)
■
Removing the Faceplate (page 57)
■
SSD Disk Replacement (page 58)
■
■
Replacing the SSD Disk (page 59)
■
Reassembling the SSD Disk (page 60)
Introduction to RAID
In a system with huge amounts of data 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 SSD 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 fail-
ures. Even with a broken disk operations can still be continued
and, once the failed disk has been replaced, the missing data can
be easily recovered. The data protection is provided by RAID
controllers installed inside the system. Each controller inde-
pendently administers the data protection for the set of SSD disks
that is connected to it.
The main storage of the R&S DVS system comprises 12 SSD
disks. These are connected to two RAID controllers which
connect a set of SSD disks each and apply a RAID 5 to the data.
With this, the data is striped across these SSD disks during write
procedures. At the same time the information necessary to
rebuild a failed disk (parity information) is generated and written
across the disks as well. With the parity information written, one
SSD disk per disk set (RAID pack) can fail and your data will still
be recoverable due to the information stored on the other disks.
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