running and that it has not been altered. For hash verification purposes, the hash
value for a given firmware version is available in the release notes document for
each TD4 update, which is available on the Tableau Download Center at https://
www.opentext.com/products/tableau-download-center.
3.3 Connecting drives
The following sections provide information that will allow for the safe and reliable
connection of drives to TD4.
Note: For drives that require adapter cables to connect to TD4, OpenText
highly recommends leaving the adapter cables plugged into TD4 and
attaching/removing the drives from the other end of the cables. While the drive
connectors on TD4 are robust and designed for many mating cycles, attaching/
removing drives from the other end of the cables will help maximize the life of
your TD4.
3.3.1 USB versions and connector types
USB specifications have changed over time, and, along with them, the naming
convention for various USB interface ports/speeds has also changed. For example,
when USB 3.0 (SuperSpeed USB) first came out, interface speeds jumped to 5 Gbps
over the previous USB 2.0 speed of 480 Mbps. With the advent of USB 3.1, the
concept of generations was introduced to cover the various interface speeds. For
example, USB 3.0 SuperSpeed is equivalent to USB 3.1 Gen 1 at 5 Gbps, and USB 3.1
Gen 2 doubled that speed to 10 Gbps. More recently, the USB 3.2 standard has been
released. However, the generational reference for speeds remains the same as USB
3.1, with USB 3.2 Gen 1 being 5 Gbps and USB 3.2 Gen 2 being 10 Gbps. Using the
most recent USB specification language, TD4’s source USB port is USB 3.2 Gen 1
running at 5 Gbps. Its destination USB ports are USB 3.2 Gen 2 running at 10 Gbps.
For simplicity, these ports are labeled as “USB” on the TD4 itself and they will
commonly be referred to as USB ports in this user guide.
TD4 USB ports all use USB Type C connectors. Type C drives and drive cables can
be inserted into TD4 without regard for orientation. To connect a USB Type A drive
to TD4, a Tableau TCA-USB3-AC Type A-to-Type C adapter cable (or equivalent
commercially available adapter) is required.
3.3. Connecting drives
ISTD230100-UGD-EN-1
User Guide
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