Acard AEC-6880, User Manual

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ACARD AEC-6880
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2.4 What you should know before the installation
Before installing the ACARD AEC-6880 , the following tips will help you to
get the best performance of the system:
2.4.1 Striping Mode
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If two hard drives are in different storage capacity, ACARD AEC-6880
will treat the smaller hard drive as a standard capacity, and double-up
the standard capacity as the total available disk capacity.
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For one pair striping connection using 2 HDD, the Jumper set on
each hard drive must in the same mode (either both “Master” or both
“Slave”). Two hard drives must connect to two independent ATA-133
cables on ACARD AEC-6880 card.
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When using two pairs striping for 4 hard drives on ACARD AEC-
6880 , the hard drives needed to be identify two pairs of Jumper
setting into “Master” and “Slave” position on each IDE port cable
connector (refer to page 8).
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For two pairs striping with 4 hard drives, the Jumper setting can not
be set at both “Master” nor both “Slave” in same connector cable.
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In order to achieve best performance, use same hard drive model, ex.
Ultra ATA 66, 100 or 133.
2.4.2 Mirror Mode
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Please beware of that if two HDD have different volumes, that ACARD
AEC-6880 could not back-up data from a larger HDD into a smaller
HDD.
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When it is at the Mirror Disk Array stage, to increase operating
performance, please ensure that your ATA-66, ATA-100 or ATA-133
HDD in-use is at the same speed.
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After set-up the Mirror Disk Array, if the HDD has not already been
backed-up, please do so. Please choose a correct source to complete
this action.