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g. Populate the next two rows in sequence.
h. Verify that all drives are at the same level and all DDIC release latches are properly locked.
CAUTION Do not proceed to close the drawer unless all DDICs are in a fully locked position or DDIC height can
inhibit or completely prevent drawer access once you close it.
3. Complete all actions to close the upper drawer. See
4. Open the lower drawer and repeat the DDIC installation
5. Following the same drawer closure process, completely close the drawer until it fully latches.
Test enclosure electrical earth connection
After completion of all installation procedures, the enclosure is ready for connection to power. You can only connect the
enclosure to a power source that has a safety electrical earth connection. Have a qualified electrical engineer confirm the earth
connection meets the product specifications.
CAUTION If you install multiple expansion enclosures in a rack cabinet, the importance of the earth connection
increases, since each enclosure increases earth leakage current.
IMPORTANT Only a qualified electrical engineer who meets local and national standards should perform the inspection.
Route 5U enclosure data cables and power cords
Expansion enclosures can be configured as either an EBOD or a JBOD. An EBOD is an expansion enclosure attached to a
controller enclosure (RBOD). A JBOD is an expansion enclosure attached directly to a server that is equipped with a SAS HBA
or SAS RAID adapter.
When properly connected to autonomous power distribution units (PDUs), power cords provide uninterrupted power to the
5U enclosure. Host and data cables provide an efficient highway for data exchanges to and from the 5U enclosure. This section
only covers the most common methods.
When properly connected to autonomous power distribution units (PDUs), power cords provide uninterrupted power to the
5U enclosure. You must properly route both while adhering to all grounding requirements and electrical safety precautions.
To adhere to electrical safety precautions:
1. Observe the caution labels affixed to the power supply units (PSUs).
2. Confirm PCM input voltage range is 100V to 240V AC at 50Hz to 60Hz, then only operate the 5U enclosure in that range.
3. You must provide a suitable power source with electrical overload protection to meet technical specification requirements.
4. You must use a provided power cord that has a tested, safe electrical earth connection for the 5U enclosure power supply.
5. Confirm the 5U enclosure connection to earth before applying power to it.
6. Do not operate the 5U enclosure with less than the provided 2 PSUs and 5 fan control modules (FCMs, other than to
provide in-service maintenance within the required time allotment.
IMPORTANT Use only Seagate approved HD mini-SAS (SFF-8644) x4 data cables that are at least .5m (1.64 feet) in
length and do not exceed 3m (9.84 feet) in length to connect to the SAS ports on each input/output module.
42 Chapter 5 Installation of 5U enclosures
"Access a drawer" on page
40.
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