Intel’s ‘Barlow Cross’ Optane DC persistent reminiscence involves workstations

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Intel showcased 96-layer QLC and previewed 144-layer QLC NAND, and is bringing Optane DIMMs to workstations, although analysis into PLC is unlikely to hit the mainstream.

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Intel introduced product roadmaps for enterprise storage merchandise at a press occasion in Seoul on Thursday, asserting the provision of 144-layer QLC 3D NAND (and principally, SSDs that incorporate them), in addition to offering extra element on second-generation Optane Information Middle (DC) persistent reminiscence, and analysis into 5-bit-per-cell (PLC) NAND.

SEE: Server virtualization: Greatest (and worst) practices (free PDF) (TechRepublic)

Whereas AMD is focusing purely on CPU efficiency, Intel has closely touted the advantages of Optane Reminiscence (a advertising identify for 3D XPoint, a Flash NAND various co-developed with Micron) for in-memory computing workloads, equivalent to Redis, Cassandra, SAP HANA, and Oracle Exadata. In comparison with conventional NAND Flash, the write endurance of Optane makes it appropriate for packing in DIMMs to make use of alongside conventional DRAM, with Intel providing 5-year warranties for Optane DC persistent reminiscence, claiming a 256 GB DIMM has a 353.72 PBW (Petabytes written) endurance.

Optane DIMMs coming to workstations

Intel is bringing the beforehand server-exclusive Optane DC Persistent Reminiscence to Cooper Lake and Ice Lake Xeon CPUs, together with workstation-class CPUs, permitting builders the pliability of using Optane on the identical system they’re creating on, with capacities as much as 512 GB per module, totaling as much as 3TB per CPU or 6TB per workstation, for dual-CPU programs. 

When out there, Optane DIMMs for workstations can be accessible in reminiscence mode (much like commonplace DRAM) or utility direct mode (much like persistent storage). Help for Optane DIMMs already exists in trendy Linux distributions and Home windows Server 2019, in addition to “within the newest Home windows 10 replace,” in line with STH.

96-layer QLC NAND in This fall 2019, 144-layer in 2020

Intel is betting huge on QLC SSDs, which supply excessive densities, however diminished learn/write speeds and decrease drive endurance. The (current-generation) Intel SSD 660p was demoed as supporting 1228 MB/s learn and 1333 MB/s write, per screenshots taken by LegitReviews, with the brand new Intel SSD 665p utilizing 96-layer QLC NAND clocking in at 1816 MB/s learn and 1887 MB/s write. These speeds are nowhere close to the efficiency present in a TLC-powered WD Black SN750 or Samsung SSD 970 Professional, although neither is the value—the Intel half has hovered round $100 for 1TB, whereas the WD and Samsung components are roughly thrice the fee. 

Efficiency ought to likewise enhance modestly with the 144-layer model, although with the appearance of PCI Categorical four.zero SSDs, the gulf between the skills of premium TLC NAND SSDs and cheaper QLC NAND is prone to widen.

PLC will not be the saving grace of mass storage

Penta-level-cell (PLC) NAND can be coming, in concept—the know-how is being investigated by Intel and Toshiba. PLC would supply elevated storage densities, although on the extreme detriment of write endurance. 3D TLC NAND—which is extensively deployed in consumer SSDs—is rated for 1,000 to three,000 cycles, whereas QLC NAND is simply rated for 100 to 1000 write cycles. 

PLC would essentially observe this development, making it helpful for a particularly restricted variety of writes per cell—functionally extra like a write once-read many (WORM) drive, with out the implied immutability of WORM. There could also be use circumstances for it, although these are comparatively unusual workloads that require mass quantities of long-lived information that should be accessible inside 10ms. Seeing PLC in general-purpose enterprise compute is unlikely, with shopper gadgets a digital impossibility given the poor write endurance.

For extra, take a look at “Hazelcast utilizing Optane DIMMs to speed up AI workloads” and “Dell EMC PowerMax provides NVMe over material, doubles down on twin port Intel Optane drives” at TechRepublic.

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Picture: Intel

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