Kioxia KCD81RUG3T84 3.84TB NVMe PCIe 4.0 U.2 Read Intensive SSD CD8-R

The Kioxia KCD81RUG3T84 is the 3.84TB base model of the CD8-R series, Kioxia's newer read-intensive data center NVMe SSD. It uses PCIe 4.0 with the NVMe 1.4 specification and Kioxia's 112-layer BiCS FLASH 3D TLC memory in a 2.5-inch, 15 mm drive. Compared with the older CD6-R, Kioxia's figures show higher write performance and lower active power at this capacity, so it is the more current choice for new PCIe 4.0 builds.

Kioxia rates the CD8-R at 1 drive write per day, which fits read-heavy work such as cloud and hyperscale storage, virtualization, web and media serving, analytics and relational databases with modest write rates. For 3.84TB Kioxia lists up to 7,200 MB/s sequential read, 3,800 MB/s sequential write, 1,250,000 random read IOPS and 195,000 random write IOPS. Typical power is 14 W active and 5 W ready. Kioxia also notes partial support for the Open Compute Project Datacenter NVMe SSD specification v2.0, plus power loss protection and end-to-end data correction.

The CD8-R is a single-port x4 drive. Kioxia's product brief is published as the 2.5-inch U.2 version and does not claim U.3 tri-mode conformance, so plan on an NVMe U.2 bay with a direct-attach or switch-based connection. It ships as a bare drive with no OEM tray or firmware, which matters in HPE, Dell and Lenovo servers.

• Check that your bay is NVMe-capable. A SAS/SATA-only bay will not run this drive.
• If your backplane is tri-mode (U.3), confirm with the vendor that it accepts U.2 drives.
• Order the matching carrier for your chassis.
• For encryption or instant erase, order KCD8DRUG3T84 (SED) or KCD8XRUG3T84 (SIE) instead.