Installation guide

Hardware Operation Manual
45
Mini SAS Cable. Another is connected to the SAS CH1/E Port on the second tier
SAS JBOD.
 Fourth tier is a SAS JBOD with a SAS CH0 on it. Connecting SAS CH0 to SAS
exp. Port on third tier SAS JBOD via a Mini SAS to Mini SAS Cable.
It is often recommended to install the hard drive with
same brand, model no., interface and capacity in this
RAID subsystem.
Due to hard drives spin at different speed and it may lead to
compatible issue or performance decline. So we do not
recommend users to install SAS and SATA hard drive
meantime in an enclosure.
RAID members need to be included at the
same enclosure
which means you need to create array in the
same
enclosure. If RAID members are created from
two or
more different enclosures, there would be some risks
(for example: if a mini-SAS cable gets problem,
RAID
members from different enclosure will be
lost, volume
sets belong to this Array may be failed. S
hutdown RAID
and JBOD to fix cable problem, after that,
turn on
JBOD and RAID system again and
controller will get
array back, but in some case it may not get the
array
back)
T
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When cabling is completed, SAS RAID system + SAS JBOD system can be turned on.
This should be done in the following order:
1. First turn on the power switch of “SAS JBOD” system.
2. Then turn on the power switch of “SAS RAID” system
3. Power on and boot the host computer(s)
T
T
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r
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When turning off SAS RAID system + SAS JBOD system, users are advised to first
shut down the server, then power off SAS RAID SYSTEM ,finally power off SAS JBOD
SYSTEM.