| To: Sam who wrote (4666) | 7/5/2021 9:44:52 AM | | From: Unwelcomeguest | | | | This isn't getting any better for WDC. A couple of hackers have posted a video describing exactly how to hack into one of the many drives using the OS3 software. Also, many users have complained that the 'upgraded' OS5 software has eliminated many of the features of OS3. WDC says that once the OS5 upgrade is implemented, users cannot go back to OS3, although the hackers found a way to do it.
Here is the link to the article with the embedded video. I watched a lot of it, but the technical hacking part was over my head. techtelegraph.co.uk
UWG |
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| From: Elroy | 7/8/2021 10:48:38 AM | | | | | | SIMO's revenues forecast to be about $220m in Q2 2021, up 20% sequentially
Q2 2020 sales were $138m, so year on year growth exceeds 50%
Amazingly, the share price is down on this good news! SIMO seems to be trading like a classic cyclical semi stock (sell the good news) despite that fact that it's a pure growth. and it should in fact show results counter the classic semi cycle results (when memory is in excess supply and memory prices are weak = the bottom of the semi cycle - SIMO should do great as their fundamentals are driven by number of devices which use memory, not the price of memory itself.
Anyways, when is WDC going to grow quarterly sales above 25% per year? |
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| To: Elroy who wrote (4668) | 7/8/2021 1:32:14 PM | | From: SiliconAlley | | | | Anyways, when is WDC going to grow quarterly sales above 25% per year?
No one here cares about SIMO revenues.. Wake us when SIMO revenues reach $17 billion, and they achieve 25% growth on that. |
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| From: Elroy | 7/8/2021 3:58:17 PM | | | | | | | I've got Silicon Alley on ignore, so I have no idea what he's posting. |
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| To: Elroy who wrote (4668) | 7/30/2021 2:34:03 PM | | From: Elroy | | | | SIMO now forecasting 2021 revenues to grow 65% to 70% (after growing 18% in 2020). 2022 is expected to be very strong as well. SIMO has 50% market share in the newest technology PCIe Gen4 SSD controllers.
Sales are going through the roof.
When is WDC going to grow sales by 65% to 70%? Oh, I forgot. Their long term revenue growth forecast is 4% to 8% per year. Ok, I guess that's pretty good..... |
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| From: Bruno Cipolla | 8/4/2021 4:49:47 AM | | | | | | Kioxia Demos HLC 3D NAND and Talks About OLC NAND
By Anton Shilov 7 days ago
Six or even eight bits per cell might be coming, eventually
Comments (3)
(Image credit: Kioxia)
The best SSDs currently use TLC or maybe QLC memory. Kioxia (formerly Toshiba Memory) was the first 3D NAND maker to start talking about 5-bits-per-cell (5 bpc) PLC (penta level cell) 3D NAND memory back in 2019. Kioxia's scientists and engineers certainly don't want to rest on their laurels, and this year they demonstrated operation of 6 bpc — hexa level cell, or HLC — 3D NAND memory and believe that even 8 bpc — octa level cell, or OLD — 3D NAND is possible. But there are some important nuances.
To store more than one bit per cell, NAND memory has to hold multiple distinct voltage levels in that cell. For example, MLC has four states per cell, TLC uses eight voltage levels, QLC has 16 voltage levels, and PLC has 32 voltage states. In other words, two taken to the power of whatever cell level you're talking about. To store six bits per cell (HLC), that cell has to hold 2^6, or 64 voltage levels.
To build 3D NAND with such cells, manufacturers have to overcome multiple challenges. They have to find the right materials that can handle storing 64 different voltage states, while also being able to differentiate between those states. That's means the voltage states can't interfere with each other. Keeping temperatures in check is also important and becomes increasingly difficult at higher bits per cell.
To demonstrate the possibility of HLC memory, Kioxia's scientists took one of the company's existing 3D NAND memory chips and immersed it in liquid nitrogen (77K, -196°C) to eliminate deterioration of the cells caused by rewrite cycles. The extremely low temperatures also help to reduce the need for tunnel insulating films, lower the voltage requirements, and stabilize the materials. All together, this improves the physical properties and processes that take place in the IC.
Kioxia's scientists said that they not only managed to write and read six bits of data from one cell and reliably hold it for 100 minutes, but they also were able to achieve a 1,000 program/erase (P/E) cycles endurance. Of course, that's largely thanks to the -196C temperatures. In normal conditions, endurance of 3D HLC NAND memory would be around 100 P/E cycles, according to its estimates. Kioxia presented results of the experiment at the 5th IEEE Electron Devices Technology and Manufacturing Conference (EDTM 2021) in April 2021 (presentation number: WE2P4-5), reports PC Watch.
3D PLC NAND has not been commercialized yet, and Western Digital (Kioxia's manufacturing partner) believes it will only make sense for some SSDs after 2025. Western Digital further claims that 3D PLC brings too many issues for a mere 25% density increase.
In contrast, 3D HLC NAND increases flash memory density by 50% compared to 3D QLC NAND, so it's more likely to be commercially feasible. Furthermore, scientists from Kioxia believe that even eight bits per cell OLC 3D NAND with 256 voltage levels is technologically possible. The task for scientists and developers now is to find the right materials, design, and controllers to make 3D HLC and 3D OLC NAND operational and commercially feasible at room temperatures.
If they fail, development of multi-level cell 3D NAND will stop at PLC and makers of flash will have to focus on increasing the number of layers in 3D NAND flash to increase memory density. Granted, Samsung and SK Hynix believe that 600 to 1,000 layers are feasible, which already opens the doors to very high capacity SSDs.
Even if Kioxia's scientists succeed in making HLC and OLC NAND work at room temperatures, they will also have to develop appropriate controllers that will be able to reliably read and write data from such flash memory. Such controllers will have to support extremely complex ECC algorithms that will require significant compute horsepower. Will such controllers be too expensive and offset the capacity advantages of 3D HLC and 3D OLC NAND? And what sort of performance could future HLC drives even offer? We already know that even QLC drives tend to perform rather poorly in heavier use cases. Only time will tell, but we don't expect TLC to fade away any time soon. |
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| From: Sam | 8/4/2021 6:19:10 PM | | | | | | After getting sold immediately the release, the stock is now more or less flat AH. I didn't listen to the CC, so I don't have a clue about what is happening with it. I'll try to read a transcript later tonight or tomorrow. It looks like a great report at first glance!
Western Digital Stock Is Slipping. Earnings Were a Blowout. -- Barrons.com
DOW JONES & COMPANY, INC. 4:48 PM ET 8/4/2021
Symbol Last Price Change |
| WDC | 64.94 | -1.2 (-1.8143%) | | QUOTES AS OF 04:00:00 PM ET 08/04/2021 | Eric J. Savitz
Western Digital (WDC) stock is trading lower late Wednesday despite reporting better-than-expected results for the fiscal fourth quarter ended June 30, and providing strong guidance for the September quarter.
For the quarter, Western Digital(WDC) posted revenue of $4.9 billion, up 19% from a year ago, and well above the Street consensus forecast at $4.5 billion. The maker of disk drives and flash memory posted non-GAAP profits of $2.16 a share, ahead of the Street estimate for $1.49 a share, and up from $1.02 a share a year earlier. Under generally accepted accounting principles, the company earned $1.97 a share, up from 63 cents a year earlier. Non-GAAP gross margin expanded to 32.9%, from 27.7% a year earlier, on stronger pricing.
The company said client-devices revenue was up 13% from a year ago, and 8% sequentially, to $2.2 billion, driven by strong demand for notebook and desktop hard drives. Data-center devices' revenue totaled $1.8 billion, up 6% from a year ago and 44% higher than the March quarter, as enterprise demand picked up. Client solutions revenue was $977 million, up 42% from a year ago, and 10% sequentially, as add-on storage products sold through retail and other channels increased.
For the September quarter, Western Digital(WDC) sees revenue ranging from $4.9 billion to $5.1 billion, with non-GAAP profits of $2.25 to $2.55 a share, and non-GAAP gross margin increasing 33%-35%. Street consensus had called for $4.9 billon in revenue and profits of $2 a share.
"I am extremely proud of the outstanding execution our team exhibited as we achieved another quarter of strong revenue, gross margin and EPS results above expectations," CEO David Goeckeler said in a statement. "Throughout this fiscal year, we successfully delivered both flash and hard drive innovations that are essential building blocks in the acceleration of the data economy....We believe we have the right foundation for success -- the right products, the right customer base, and the unique ability to address two very large and growing markets."
In late trading, Western Digital(WDC) stock is off 2.3%, to $63.42.
Write to Eric J. Savitz at eric.savitz@barrons.com |
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