Exascend has announced the PE4 SSD family in the M.2 2280 form factor, capable of storing up to 15.36 TB of information. These are currently the most capacious products in their class. The devices are also available in U.2 and E1.S formats.
The drives are based on 3D TLC NAND flash memory chips, and the PCIe 4.0 (NVMe 1.4) interface is used for data exchange. The standard M.2 2280 solutions have a declared sequential read speed of 3270 MB/s, and a sequential write speed of 2980 MB/s. The IOPS value for random read and write operations in 4 KB blocks is up to 404 thousand and 52 thousand, respectively. The capacity varies from 240 GB to 15.36 TB.
In addition to standard SSDs, the PE4 M.2 2280 series includes Pro and Max variants. The former use 3D TLC NAND chips, and their capacity varies from 240 GB to 3.84 TB. Read/write speed is up to 3200/3005 MB/s. The IOPS value for reading and writing is up to 381 thousand and 121 thousand, respectively. Max drives, in turn, are built on pSLC chips, and their capacity is from 240 GB to 1.92 TB. Read and write speed is up to 3075 and 2980 MB/s, the IOPS value for random reading and writing is up to 436 thousand and 173 thousand.
Image source: Exascend
U.2 and E1.S solutions are also available in Standard, Pro and Max versions. Their capacity ranges from 960 GB to 15.36 TB. Speed performance is generally comparable to that of M.2 2280 solutions.
All SSDs can be used at temperatures from 0 to +70 °C. The MTBF (mean time between failures) value reaches 2 million hours. Support for TCG Opal 2.01, AES-256 encryption, and the hardware Power Loss Protection (PLP) function, which is responsible for the safety of information in the event of a sudden power outage, is mentioned. The manufacturer provides a five-year warranty on the products.