EonStor U16U Installation and Hardware Reference Manual
1-10
Rear Panel Components
NOTE:
SCSI termination: SCSI termination is automatically set when a cable is connected to
a SCSI port. There is no need to change the terminator settings on SCSI channels
using the configuration options in firmware. The same applies to JBOD enclosures.
♦
RS-232C
- The controller modules all come with a single RS-232C
serial port (“Serial” in
Figure 1-8
). The serial port can be used for
remote management.
♦
Ethernet Ports
– A single RJ-45 Ethernet port (located on the right of
RS-232C in
Figure 1-8
) is used for remote management through the
network.
♦
Drive
- All the models come with SCSI-320 drive channels that are
connected to the back plane through connectors on the IO board. (
Note:
the drive interfaces are not accessed through the controller module
rear panel. They are accessed through the rear panel
)
1.5.1.5 Drive Bay Interfaces
The controller comes with 2 SCSI-320 drive channels (CH2 and CH3) that
connect to the physical drives through the backplane that separates the front
section of the subsystem from the rear section. Each drive channel has been
pre-assigned 8 drives through which data and IO commands will be
transmitted. The drives, and the drive channels to which they have been
assigned are shown in
Figure 1-9
.
Drives Assigned to
CH3
Drives Assigned to
CH2
CH3-ID8 (Slot 1)
CH3-ID12 (Slot 2)
CH2-ID8 (Slot 3)
CH2-ID12 (Slot 4)
CH3-ID9 (Slot 5)
CH3-ID13 (Slot 6)
CH2-ID9 (Slot 7)
CH2-ID13 (Slot 8)
CH3-ID10 (Slot 9)
CH3-ID14 (Slot 10)
CH2-ID10 (Slot 11)
CH2-ID14 (Slot 12)
CH3-ID11 (Slot 13)
CH3-ID15 (Slot 14)
CH2-ID11 (Slot 15)
CH2-ID15 (Slot 16)
Figure 1-9: Drive Channel Drive Assignment
1.5.1.6 Battery Backup Unit
An optional Li-ON BBU (IFT-9270UBT), shown in
Figure 1-10
, can be
purchased separately by users and is able to sustain the 512MB of cache
memory for up to 72 hours after a power failure. Although only an option,
purchasing of a BBU is highly recommended for the safe-guarding of data
integrity.