Solidigm’s datacenter SSD choices have been clearly delineated into completely different classes – the D3- SATA choices for legacy servers, the D5- QLC-based choices (with completely different fashions providing completely different tradeoffs between value and endurance), and the D7- NVMe drives for one of the best efficiency and endurance scores. The corporate has been utilizing TLC NAND within the D7 drives to date. Final week, the corporate launched a brand new member of their D7 lineup for very write-intensive workloads – the D7-P5810 utilizing their mature 144L SLC 3D NAND.
Storage-class reminiscence (SCM) choices corresponding to Optane have been utilized by hyperscalers for quite a lot of use-cases corresponding to write-caching, HPC purposes, journaling, on-line transaction processing (OLTP), and so forth. With the winding down of the Optane product line, many alternatives have opened up for SSD distributors to deliver near-SCM sort merchandise into the market. We noticed Micron introducing their XTR NVMe SSDs earlier this yr utilizing their 176L 3D NAND in SLC mode. The corporate had optimized the firmware on the drives and drawn up specs for near-Optane efficiency in Microsoft SQL Server analytics workloads. Solidigm is taking the same strategy with the D7-P5810, albeit with optimizations for a special use-case.
Solidigm took a take a look at the necessities happy by Optane drives in Alibaba’s (Optane + QLC) deployment for native disks of their cloud servers, and discovered that the Optane drives had been vastly over-engineered for them. For instance, Alibaba’s workload solely demanded 37 DWPD, whereas Optane offered 100. The 4K random write necessities was additionally solely 8K IOPS per tenant, whereas Alibaba’s configuration resulted within the Optane drive offering 20K IOPS per tenant. Solidigm has optimized the firmware of the D7-P5810 to satisfy these necessities by offering 50 DWPD worst-case endurance, and 10K IOPS per tenant at capacities much like the Optane drives utilized by Alibaba.
The specs of the D7-P5810 are summarized beneath. The 800 GB model of the drive is in mass manufacturing, whereas the 1.6 TB model is anticipated to make an look within the first half of 2024.
The corporate had a number of fascinating displays at Storage Area Day 26, and in a type of, the corporate put out a slide evaluating the D7-P5810 towards the competitors.
It’s not troublesome to determine that Competitor A within the above slide is Micron’s XTR NVMe SSD, whereas Competitor B is Kioxia’s FL6 Collection. Totally different enterprise SSD use-cases have completely different necessities when it comes to sequential speeds, random entry IOPS, endurance, and energy consumption. In consequence, we’re beginning to see distributors provide specialised drives with firmware optimized for a specific use-case. The variations within the above comparability could be attributed to the seller optimizing for various use-cases. Elementary variations within the flash packages aside (176L in Micron’s XTR vs. 96L BiCS in Kioxia’s FL6 vs. 144L in Solidigm’s D7-P5810), it’s possible that these distributors can obtain completely different tradeoffs with their drive’s firmware if required.
Solidigm acquired Intel’s Cloud Storage Acceleration Layer (CSAL) staff earlier this yr. At Intel, the group (which had open-sourced its work within the Storage Efficiency Improvement Equipment) had been engaged on Optane as an accompanying drive for different slower media. After becoming a member of Solidigm, the corporate has shifted focus from Optane to SLC, with a deal with utilizing drives such because the D7-P5810 as a complement to their high-density QLC drives.
Apart from the above use-case in deployment at Alibaba, the D7-P5810 can be utilized in all kinds of eventualities corresponding to metadata storage, caching, and information placement primarily based on service-level settlement (SLA) necessities.
With the inclusion of the D7-P5810, the Solidigm enterprise SSD product line has a product portfolio encompassing a variety of endurance scores with suitability for various purposes and use-cases.
Optane could also be winding down quickly, however it’s heartening to see distributors like Micron and Solidigm stepping as much as present SLC-based options. By avoiding over-engineering for particular use-cases which are at present being served by Optane drives, the distributors are additionally capable of current enterprise SSD customers with a cheap resolution.