GoKawiilDapuStor unveils J5060 SSD splitting QLC flash into a fixed high-speed pSLC zone
DapuStor introduced a dual-mode firmware for its enterprise J5060 SSD that lets operators carve out a portion of QLC flash to run as pSLC, boosting speed at the cost of capacity. Depending on configuration, users sacrifice 6% to 20% of QLC storage in exchange for random-write performance that's over seven times faster, with the fixed region exposed as its own block device rather than a dynamic cache. The drive, shown at FMS 2026, spans 15.36TB to 122.88TB capacities but still has no announced price, customer, or release date.
GoKawiil's interpretation of the reporting above, not reported fact.
Enterprise storage buyers have long faced a tradeoff between QLC's density and its poor random-write performance, forcing costly workarounds like separate SLC drives or write buffering software. By letting operators statically allocate part of a QLC drive as high-endurance pSLC, DapuStor offers a tunable middle ground that could suit latency-sensitive tasks like database logging without needing dedicated hardware. Whether this approach gains traction will depend on pricing and how it compares to standard dynamic SLC caching already common in consumer drives.
- DapuStor's J5060 drive lets users fix a portion of QLC flash as permanent pSLC for speed gains.
- The tradeoff sacrifices 6-20% of capacity for over 7x faster random writes and sub-8-microsecond latency.
- No pricing, customer, or release date has been confirmed since the FMS 2026 announcement.
Source: tomshardware.com — Shane Downing, 2026-09-22
Published there as: “New DapuStor SSD pairs high-capacity QLC with a permanent pSLC region — trades 6% to 20% of its QLC capacity for more than 7x faster random writes”
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