Generative SSDs Coming Soon

Memory hierarchy pyramid standing on its apex, with tape at the point on the bottom, and L1 cache on the widest part at the top. At the sides are arrows pointing from bottom to top marked "Increasing Cost" and "Increasing speed"Now that Generative AI has hit its stride, the industry is beginning to see new applications of this technology that have previously been out of reach.  One such application is the development of the Generative SSD by an Andorran company by the name of SSDystopia, who took the time to brief The SSD Guy about its development.

The Generative SSD comes to the market with a completely different approach to Continue reading “Generative SSDs Coming Soon”

WDC Stealthily Announces More Details for HDD/Flash Split

Historical microphotograph of a cell splitting into two.On March 5 Western Digital issued an announcement updating the company’s plan to divide its HDD and flash businesses into two independent companies in the second half of this year.

The flash part of the business will be spun out with current WDC CEO David Goeckeler as “CEO Designate.”  No further Continue reading “WDC Stealthily Announces More Details for HDD/Flash Split”

It’s Official: WDC to Split into HDD & Flash Parts

During the company’s October 30 earnings call Western Digital CEO David Goeckeler started the conversation with the revelation that the company would be split into two, with a new flash-only company to be created in the process.  This plan, intended to increase the company’s shareholder value, was the outcome of a process triggered by activist shareholder Elliott in May 2022, which was the subject of a couple of Continue reading “It’s Official: WDC to Split into HDD & Flash Parts”

What is Write Amplification?

A 4x4 checkerboard of red, green, and white squaresFor a long time, The SSD Guy has been talking about Write Amplification without explaining what It is.  This post is intended to fix that.

Write amplification is an internal issue for NAND flash SSDs that arises from the way that NAND chips work.  It doesn’t exist in standard HDDs, nor did it exist in DRAM SSDs before we had NAND ones.  In a nutshell it’s the Continue reading “What is Write Amplification?”

Would WDC Really Merge with Kioxia?

Column Chart comparing WDC's and Kioxia's margins for the past 12 quartersEver since Toshiba decided to spin out its memory business in 2017, leading to the creation of Kioxia, there have been rumors of Western Digital (WDC) acquiring it, or of Kioxia acquiring WDC’s flash memory business.

There is a new spate of merger rumors in response to Elliott Management’s proposal last May that Continue reading “Would WDC Really Merge with Kioxia?”

Mardi Gras vs. SSD Garbage Collection

Silhouette of a hopping rabbitMardi Gras is a good time for The SSD Guy to bend your mind.  It’s the day before Ash Wednesday kicks off Lent, the penitential season leading up to Easter.

And it never seems to happen on the same date.

I will compare SSD garbage collection to the timing of the Lenten season and Easter.  There are surprising similarities.

Very few people understand Continue reading “Mardi Gras vs. SSD Garbage Collection”

Another Perspective on a WDC Split

Western Digital logo splitting int the WD logo and the SanDisk logoIn an earlier post I reacted to a letter that activist shareholder Elliott sent to Western Digital’s board asking for the company to be split into two parts, one for HDDs and the other for flash.  I wrote it before learning that the Elliott letter was posted on the web for public viewing.

I found Elliott’s proposal hard to rationalize.

Although the reasoning I shared in that post is Continue reading “Another Perspective on a WDC Split”

Smarter NAND for Better SSDs

NAND part of one of the diagrams below.Micron presented something really interesting during the company’s Investor Day Conference last week, but it didn’t seem to get any press coverage.  The company naturally repeated its plan to become a more important supplier of data center SSDs, but what The SSD Guy was most interested in were a few comments they gave for choosing to make vertically-integrated SSDs.  Micron now makes not only the NAND and the DRAM internal to its SSDs, but also the controller.

Why would a company Continue reading “Smarter NAND for Better SSDs”

WDC: To Split, or Not to Split?

Photo of log being split with an axeWestern Digital’s Board of Directors was recently sent a letter by activist shareholder Elliott asking for the company to be split into two parts: one for HDDs and one for flash.  The reason given was that the company’s SanDisk acquisition was not performing well.

Elliott currently holds a 6% stake in WDC.

According to an article in Reuter’s, Elliot’s letter said: Continue reading “WDC: To Split, or Not to Split?”

Should WDC Acquire Kioxia?

Single star from the post's second chart.Over the past couple of months rumors asserted that Western Digital (WDC) was in talks to acquire joint venture partner Kioxia.  This is not the first time such rumors have emerged.  In November of 2020, when Kioxia was expected to make its initial public offering, WDC was rumored to be in such talks, and before that, in early 2017, when Toshiba first started to plan to spin off its NAND flash and SSD business, WDC was rumored to Continue reading “Should WDC Acquire Kioxia?”