Test Enclosure Electrical Earth Connection; Route 2U Enclosure Data Cables And Power Cords - Seagate Exos E 2U12 Series Hardware Installation And Maintenance Manual

4. For the 2U12 expansion enclosure, take the following actions until all slots hold either a DDIC or an optional blank carrier.
a. Insert the next DDIC and move across the row to the next slot in the sequence, repeating until the top row is full.
b. Repeat until the middle row is full.
c. Repeat until the bottom row is full.
5. For the 2U24 expansion enclosure, insert the next DDIC and move across the row to the next slot in the sequence,
repeating until all slots hold either a DDIC or an optional blank carrier.

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 2U 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.
Host and data cables provide an efficient highway for data exchanges to and from the 2U enclosure. Cable connections and
routing vary, depending on intended use and installation. This section only covers the most common methods.
When properly connected to autonomous power distribution units (PDUs), power cords provide uninterrupted power to the
2U enclosure. You must properly route both cables and power cords 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 cooling modules (PCMs).
2. Confirm PCM input voltage range is 100V to 240V AC at 50Hz to 60Hz, then only operate the 2U 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 2U enclosure power supply.
5. Confirm the 2U enclosure connection to earth before applying power to it.
6. Do not operate a 2U enclosure with less than the provided 2 PCMs, other than to provide in-service maintenance within the
required time allotment.
IMPORTANT Use only Cat-6 or above cables with RJ-45 connectors for Base-T connections.
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.
28 Chapter 4 Installation of 2U enclosures