GoKawiilDapuStor's J5060 SSD splits QLC flash into a permanent pSLC zone for enterprise workloads
DapuStor unveiled a dual-mode enterprise SSD, the J5060, that lets operators carve out a fixed portion of its QLC flash to run as faster pseudo-SLC storage, using firmware rather than dedicated SLC chips. The drive ranges from 15.36TB to 122.88TB in a U.2 PCIe 4.0 x4 form factor, with the 30.72TB model reserving about 800GB as pSLC, and each region appears to the host as a separate block device. DapuStor showed the drive at FMS 2026 but hasn't disclosed pricing, customers, or a launch date.
QLC flash is cheap and dense but historically weak at random writes and endurance, limiting its use for latency-sensitive enterprise tasks like database logs. By letting operators permanently allocate part of the drive to a much more durable, low-latency pSLC region without needing separate SLC chips, DapuStor is offering a way to blend QLC's cost advantages with SLC-like performance for specific workloads, potentially expanding QLC's reach into demanding data center applications.
- J5060 lets users fix a portion of QLC NAND as permanent pSLC via firmware, no dedicated SLC chips needed.
- The pSLC region delivers over 7x better random-write performance and 25x more program/erase endurance than the QLC region.
- No pricing, customer commitments, or availability date have been announced since the FMS 2026 reveal.
Source: tomshardware.com — Shane Downing, 2026-09-22
Published there as: “New DapuStor SSD pairs high-capacity QLC with a permanent pSLC region”
Read the original report → The summary and analysis above are GoKawiil's own, written from reporting by the source above. Facts and quotes belong to the original publisher.