the SSD Buyers Guide - click to see article
SSD buyers guide
click for RAM SSDs page
SPARC Product Directory - since 1992
from the makers of
sparc product directory
editor's note:- after 17 years this SPARC compatible RAM directory is being phased out.

For RAM news and oems see RAM directory - on

For SSDs based on DRAM memory see RAM based SSDs - on

Other related links:- SPARC History, SSD market history
click for more info about the revolutionary auto tuning XcelaSAN SSD accelerator from Dataram
XcelaSAN is a "revolutionary" self optimizing
2U enterprise SSD accelerator
from Dataram

Sun Compatible Memory / RAM

SSD news
the Fastest SSDs
Surviving the Solaris x86 Wars
the Solid State Disks Buyers Guide
Can you trust your flash SSD's specs?
RAM SSDs versus Flash SSDs - which is Best?
SSD ad - click for more info
Flash Hype Leads to SSD Myopia - Says Solid Data

Editor:- September 29, 2009 - Steve Topper, CEO of Solid Data Systems today commented on market perceptions about RAM SSD versus flash SSD positioning in a press release about the company's updated range of FC compatible terabyte class RAM SSDs.

"There is a market perception that only NAND flash is solid-state storage and that DRAM is too expensive and too volatile," said Steve Topper. ""The market is being told that flash drives are the way to go as they are cheaper and can best deliver enterprise-class performance and reliability. This simply is not true. While flash is somewhat less expensive than DRAM, they cannot beat us on latency and performance, and large numbers of customers have told us that the endurance of these products simply is not there. In many cases, these drives wear out after only days of use."

Editor's comments:- while I wouldn't agree exactly with all the details in these comments. I do agree with some of it. It's important to realize that the most competitive RAM SSDs are best regarded as part of a product continuum which starts with flash and extends up to RAM. If a flash SSD can do the job - it generally will be chosen because of the lower cost.

But in some applications access-time replaces random-IOPS as the key determinant of application performance.

Let's say for example that a critical bottleneck in your application looks like a small table resident on the SAN which involves 5 consecutive R/W modify cycles to the same block of memory. At the system level - a RAM SSD can be 10x to 20x faster than a flash SSD - even if it has the same nominal random IOPS* and data throughput. It's an undeniable fact that RAM SSDs do a better job at application speedup for a small group of applications - regardless of the 9x higher typical cost for the same capacity. That's why customers still buy them.

* There are rare exceptions. Violin Memory has patented a non blocking write in their flash SSD array - which enables a read operation to immediately follow a write on the same block (without waiting for the erase write to complete). But I don't know how many consecutive operations would be speeded up in that architecture - maybe just the next one in the sequence - but not the whole set.

3D Memory Market Reality Check

Editor:- September 13, 2009 - How is the 3D memory chip market stacking up? - An article in Semiconductor International reviews the market's progress.

Author Philip Garrou says - "3D memory surely will happen, just not that quickly" - and reminds readers that a few years ago analysts were predicting it would be an established market by 2010. the article

New Article Looks at Recession in the Memory Market
Editor:- February 9, 2009 - Lane Mason, Memory Market Analyst at Denali - has published a new article - "Memory Market's Recession - Actions and Realities."

This give a good explanation of why the woes in the memory market are so bad. the article, storage analysts

Qimonda Goes Bust

Munich, Germany - January 23, 2009 - Qimonda AG has petitioned for the opening of insolvency proceedings due to illiquidity.

To comply with German law the company has announced the appointment of insolvency administrators. ...Qimonda profile

Editor's comments:-
Qimonda's revenue in 2008 was 1/2 the level it had been 2 years earlier, and the outcome (in today's press release) was predicted in an article I wrote in 2006 - the names change but the problems remain the same.

Objective Analysis has published an article about the lead up to Qimonda's insolvency and explores the possible fallout for Qimonda's stakeholders.

Dataram Re-enters the SSD Accelerator Market

Editor:- October 8, 2008 - Dataram has acquired an SSD company.

For full analysis see the RAM SSD page.

WEDC Expands DDR SDRAM Product Line

Phoenix, Arizona - August 5, 2008 - White Electronic Designs Corp expanded its family of DDR2 SDRAM-based multi-chip packages with the launch of an 8Gb device.

The SDRAM is organized as 128M x 72, packaged in a 16 x 22mm, 352mm2, 208 PBGA. This package provides high-density memory for extended-environment embedded computing, such as that used in aircraft, communications and missiles. Benefits include higher board density and routing advantages, with 56% more space savings and a 50% reduction in I/O count over a comparable FPBGA approach. ,,,White Electronic Designs profile
RAM manufacturers
Chips / Flash / USB



Alliance Semiconductor


Apacer Memory America


ATP Electronics

Avant North America


Century Microelectronics

Corsair Memory

Crucial Technology

Cypress Semiconductor

Dane-Elec Memory



Elpida Memory

Fairchild Semiconductor


Hynix Semiconductor

IBM Microelectronics

Inotera Memories

Kentron Technologies

Kingston Technology

MA Labs


Micro Memory

Micro Memory Bank

Micron Technology

Mosel Vitelic



Nanya Technology




PNY Technologies


Ramaxel Technology


Renesas Technology

Rocky Mountain Ram

Samsung Electronics

Silicon Mountain Memory


SMART Modular Technologies

Southland Micro Systems





Transcend Information

TwinMOS Technologies


Viking Components


White Electronic Designs

Winbond Electronics

Z Tech International

still can't find it? check the acquired, dead & renamed list
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Are MLC SSDs Safe in Enterprise Apps?
This is a follow up article to the popular SSD Myths and Legends which, a year earlier demolished the myth that flash memory wear-out (a comfort blanket beloved by many RAM SSD makers) precluded the use of flash in heavy duty datacenters.

This new article looks at the risks posed by MLC Nand Flash SSDs which have recently hatched from their breeeding ground as chip modules in cellphones and morphed into hard disk form factors.
which technology to choose? - read the article It starts down a familiar lane but an unexpected technology twist (which arrived in my email while writing this article) takes you to a startling new world of possibilities. the article
ssd specs article Can You Trust Your Flash SSD's Specs & Benchmarks?
No - sadly you can't! There are many intrinsic technical reasons why you can't believe most published benchmarks for flash SSDs (whether done by magazines or vendors) and why even the tests you carefully do yourself don't give reliable results which correlate with how the SSD will perform in real-life applications.

We warned you of it this problem here on last year - and now other publications and vendors are starting to take it seriously too. the article
3rd Party RAM,, article by Keystone Memory
3rd Party RAM, Your Rights on Server Warranties - article by Keystone Memory

Users know that memory and hard disk drives aren't made by most of the companies from whom they buy their servers, notebooks and desktops. But they are often intimidated from competitively buying 3rd party upgrades by sales tactics aimed at locking them in to a single source. Such tactics often hint that maintenance contracts and warranties will be void or negatively impacted by the presence of 3rd party upgrade products. That kind of anti competitive pressure is illegal in many countries. This article provides an overview of the legal protection that users may have under a US law called Magnuson and Moss. the article, ...Keystone Memory profile, US Storage VARs
Squeak! - Animal Brands and Metaphors in the Storage Market
Squeak! - Animal Brands and Metaphors in the Storage Market
Animal marketing metaphors are popular in service industries, but you'd be surprised how many companies have used animals in their marketing of data storage products and services.

The storage market was worth over $150 billion last year, and as it gets bigger - more companies will turn to animal brands to help differentiate their otherwise bland products and lend them artificial (or deserving) characters and virtues.

The idea behind this type of marketing is to suggest positive connotations so it's unlikely that anyone will choose to associate their products with gremlins. But you may be surprised by the population of the storage ark.

This reference articles lists all known companies who have furry marketing brands, and also includes some which are slimy, scaly and scary too. the article, Mice in storage
SPARC history
SPARC History
Spellabyte and Terrorbyte loved sitting around
the campfire, discussing the good old days of
SPARC computing.
article:- Hardware Upgrades to Make Your SPARC Server Go Faster SPARC computers SBus & PCI cards
SPARC manufacturers USASun/SPARC Resellers in the USA UKSun/SPARC Resellers in the UK

SPARC(R) is a registered trademark of SPARC International, Inc. SPARC PRODUCT DIRECTORY(SM) is a service mark of SPARC International, Inc used under license by ACSL. Products using the SPARC trademarks are based on an architecture developed by Sun Microsystems, Inc.