SanDisk, the flash storage brand, has recently updated its SanDisk UltraQLC DC SN670 SSD storage offering, which now comes with a larger storage offering, and will launch more large storage offerings in the following years.
Earlier this year, the Sandisk UltraQLC DC SN670 storage was launched with storage options of 30TB to 122TB. Recently, they have shown a larger storage offering, which is 256TB.
This SSD storage uses a 2Tb BiCS8 3D QLC NAND storage chip, which allows SanDisk to stack it and produce storage with such a giant capacity. This storage comes with a data read rate of 13GB/s and a data write rate of 3GB/s using the PCIe 5.0 interface.
Another advantage of this UltraQLC storage is its ability to write data directly to QLC memory chips, and now no longer needs to go through SLC memory chips using Direct Write QLC technology. Previously, to ensure that storage using QLC chips can last longer, data written to this storage would have to be written to SLC (Single Level Cell) storage chips first.
This technology simplifies the process of writing data to QLC storage directly and reduces latency to access data, but the permanent issue that QLC shows is that the data write rate for this type of storage is slower.
The Dynamic Frequency Scaling function is also seen to help scale the speed of reading and writing data on this SSD to reduce electricity consumption. SanDisk did not give many details about this technology, but it is expected to be shown closer to the launch of this product.
In the meantime, SanDisk also confirmed that they will extend the offering of this data center SSD storage to 512TB and 1PB (petabyte) storage options in the future. The 256GB Sandisk UltraQLC DC SN670 storage will be offered in 2026, while the 512TB storage will arrive in 2027. At this time, it is unknown when the 1PB storage option will be introduced.