Chapter 10 Software Raid1; Overview Of Software Raid1; What Is Software Raid1 - Hitachi HF-W2000 58 Instruction Manual

CHAPTER 10 SOFTWARE RAID1

10.1 Overview of Software RAID1

10.1.1 What is software RAID1?

This chapter describes how to manage the software RAID1 feature of the B model.
In this chapter, this equipment denotes the B model. Note that only HDDs (hard disk drives) are used as a drive for
this equipment. A drive is denoted simply as HDD in the following explanations. In addition, software RAID1 is
denoted simply as RAID1 in the following explanations.
The screenshots shown in this chapter show Windows
same in other OSs. In addition, the models and the capacities of HDDs might be different from those in actual
implementations.
● Although this equipment features RAID1 and is thus more reliable than general systems, it is
still vulnerable to the loss of data stored on the HDDs. Permanent data loss is caused not only
by mechanical failures, but also by unexpected power failures or operational errors. To prevent
such data loss, schedule data backup operations, and protect the power source from
undesirable interruptions by using a UPS or other means.
● This equipment is evaluated assuming the use of the specific HDD models authorized by the
manufacturer. Replace HDDs by using only the specific items specified by the manufacturer.
Failure to do so might result in existing data on the HDD being lost. In addition, always observe
the recommended replacement interval for HDDs (see APPENDIX HANDLING OF
REPLACEABLE COMPONENTS).
● Each unit of equipment has its own RAID1 configuration information (such as a serial number).
As such, you cannot use HDDs by swapping them even between two different units of this
equipment. If you attempt to do so, unexpected operation might result from inconsistencies in
the configuration information or other reasons.
● Do not use an HDD previously used in any model as a replacement HDD. If you do, this
equipment might not operate properly or the data on the HDDs might be lost because of
configuration information mismatches or other reasons.
● For a replacement HDD, use a brand-new HDD (an unused HDD) or an HDD to which
"Initialize Drives" has been applied (see 10.6.7 Drive initialization feature).
● Maintaining a RAID1 system requires a high level of expertise. If users make any mistakes
during their work, the data stored on the HDDs might be lost.
● The capacities of drive bay 1 and drive bay 2 must be the same. Do not install HDDs that have
different capacities.
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10 2016 LTSB, but the displayed content is essentially the
NOTICE
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10. SOFTWARE RAID1