EonStor S12E-R1132-4/G1133-2 Installation and Hardware Reference Manual
4.3.2
Enclosure ID Settings
There is a rotary ID switch on every expansion enclosure that is manually
configured using a flat blade screwdriver. The configurable IDs start from 1
to 6. Usually the numbering starts from the one closest to the managing
RAID enclosure.
The redundant-controller RAID connects to a maximum of
3
JBODs. The
single-controller RAID connects to a maximum of
4
JBODs. Therefore, IDs
1 to 4 will be sufficient.
Make sure a unique ID is configured on each JBOD so that the SAS WWN
addresses of disk drives can be properly assigned. RAID system firmware
automatically manages these addresses.
Figure 4-6: Setting the Enclosure ID
4.3.3
Hard Drives Installation Concerns
․
MUX boards
are necessary using SATA drives in a redundant-
controller configuration, i.e., the “R” models, both in RAID or JBOD
enclosures.
․
These models only support SATA-II disk drives (at the
3Gbps
speed).
Some disk drives may come defaulted to the 1.5Gbps speed. You
may need to configure their speed using jumpers or firmware
configuration utility. Please consult your drive vendor.
․
Mixing SAS and SATA
drives in an enclosure is allowed; however,
there are concerns for such use:
--
SAS drives spin at a higher RPM, and if you place a column of
slower SATA drives in between high-RPM SAS drives, erroneous
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