Hitachi HF-W2000 30, User Manual

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PREFACE
This manual describes the operation and adjustment procedures required in the operator’s daily
operation of the Hitachi FA Computer HF-W2000 Model 35/30 (hereafter, the “Equipment”).
This manual consists of the following chapters:
CHAPTER 1 GETTING STARTED
CHAPTER 2 CONSTRUCTION
CHAPTER 3 OPERATION
CHAPTER 4 SPECIFICATIONS
CHAPTER 5 INSPECTION AND MAINTENANCE
CHAPTER 6 TROUBLESHOOTING
CHAPTER 7 MAINTENANCE ACTIONS
CHAPTER 8 USAGE NOTES
CHAPTER 9 RAID1
CHAPTER 10 SOFTWARE RAID1
NOTICE
A machine error, an unexpected power failure, or an operation error on the
Equipment may cause files to be lost permanently. To prevent such loss of data,
implement scheduled backup in daily operation.
Note for storage capacity calculations:

Memory capacities and requirements, file sizes and storage requirements, etc. must be
calculated according to the formula 2
n
. The following examples show the results of such
calculations by 2
n
(to the right of the equals signs):
1KB (kilobyte) = 1024 bytes
1MB (megabyte) = 1,048,576 bytes
1GB (gigabyte) = 1,073,741,824 bytes

As for disk capacities, they must be calculated using the formula 10
n
. Listed below are the
results of calculating the above example capacities using 10
n
in place of 2
n
:
1KB (kilobyte) = 1000 bytes
1MB (megabyte) = 1000
2
bytes
1GB (gigabyte) = 1000
3
bytes

This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment.
This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own
expense.