VentureBeat: The death of disk? HDDs still have an important role to play
VentureBeat: The death of disk? HDDs still have an important role to play. https://venturebeat.com/2019/09/02/the-death-of-disk-hdds-still-have-an-impo... I invented the SSD (solid state disk) in August 1980, first marketed one in August 1981.See "SemiDisk Systems".
On Monday, September 2, 2019, 06:28:13 PM PDT, \0xDynamite <dreamingforward@gmail.com> wrote:
I invented the SSD (solid state disk) in August 1980, first marketed one in August 1981.See "SemiDisk Systems".
Seriously? You mean yourself as Jim Bell or are you quoting?
I, Jim Bell, invented the SSD (for personal computers: S-100, TRS-80 Model II, IBM PC, Epson QX-10), in about August 1980, while I was working for Intel. (But it was my own private project). I went on to manufacture it, in my company SemiDisk Systems Inc. beginning late 1981. https://www.storagesearch.com/chartingtheriseofssds.html "In 1982 - SemiDisk Systems (based in Beaverton Oregon) became the first company to ship SSD accelerators for the Intel microprocessor based PC market. " http://www.s100computers.com/Hardware%20Folder/SemiDisk/History/History.htm SemiDisk Systems was founded by perhaps one of the most unusual and controversial characters amongst our list of S-100 board companies. His name was Jim Bell. Bell was born in Akron, Ohio and attended the MIT where he earned a degree in chemistry. After graduation, he worked for Intel before founding SemiDisk Systems, in 1982. The company was located in Beaverton Oregon. It focused on making memory chip based "solid state" disk drives. It had a early lead in the field before the concept became widespread and for a short time the market was between them and Electralogics. About the same time they went on to make IBM-PC (and even TRS 80 Model 2) memory disk boards. SemiDisk closed in 1992.
On 9/6/19, jim bell <jdb10987@yahoo.com> wrote:
http://www.s100computers.com/Hardware%20Folder/SemiDisk/History/History.htm
https://www.pcmag.com/article/349186/remembering-pcmags-bill-machrone http://www.s100computers.com/Hardware%20Manuals/SemiDisk/MS%20Review%20of%20... If only cryptocurrency existed back then, HODLing even the profit from just one $2000 board would buy a lot of moon today. Here's to everyones next inventions :)
On 9/2/19, jim bell <jdb10987@yahoo.com> wrote:
VentureBeat: The death of disk? HDDs still have an important role to play. https://venturebeat.com/2019/09/02/the-death-of-disk-hdds-still-have-an-impo... I invented the SSD (solid state disk) in August 1980, first marketed one in August 1981.See "SemiDisk Systems".
"Solid state"... does anyone make a RAMdrive on PCIe or faster interface... that you can actually populate with more than a lousy 4 dimms... at least 32 up to a chassis stuffed with 500/512 of them. There is a market for ludicrous speed if it can beat cost or performance of todays parallel node fabrics. DYOR. https://old.reddit.com/r/DataHoarder/comments/cmq0bg/backblaze_hard_drive_st...
On 9/2/19, grarpamp <grarpamp@gmail.com> wrote:
On 9/2/19, jim bell <jdb10987@yahoo.com> wrote:
VentureBeat: The death of disk? HDDs still have an important role to play. https://venturebeat.com/2019/09/02/the-death-of-disk-hdds-still-have-an-impo... I invented the SSD (solid state disk) in August 1980, first marketed one in August 1981.See "SemiDisk Systems".
"Solid state"... does anyone make a DRAMdrive
ie: here are some DRAM examples that for some users are too small, slow, old, and or insist on integrating "backup" solutions whose function is better handled elsewhere... Acard ans-9010ba sata 8 slot BayRAMFive sata 4 slot DDRdrive PCIe 4 slot http://www.supremelaw.org/systems/acard/ http://supremelaw.org/patents/BayRAMFive/utility.application/award/ http://www.ddrdrive.com/menu3.html http://www.supremelaw.org/systems/ https://old.reddit.com/r/DataHoarder https://en.wikipedia.org/wiki/Solid-state_drive
The reason I asked because I can't figure out how you can get persistent memory without burning circuits. An internal battery perhaps or a writable crystal, but.... how? \0xD On 9/3/19, grarpamp <grarpamp@gmail.com> wrote:
On 9/2/19, grarpamp <grarpamp@gmail.com> wrote:
On 9/2/19, jim bell <jdb10987@yahoo.com> wrote:
VentureBeat: The death of disk? HDDs still have an important role to play. https://venturebeat.com/2019/09/02/the-death-of-disk-hdds-still-have-an-impo... I invented the SSD (solid state disk) in August 1980, first marketed one in August 1981.See "SemiDisk Systems".
"Solid state"... does anyone make a DRAMdrive
ie: here are some DRAM examples that for some users are too small, slow, old, and or insist on integrating "backup" solutions whose function is better handled elsewhere...
Acard ans-9010ba sata 8 slot BayRAMFive sata 4 slot DDRdrive PCIe 4 slot
http://www.supremelaw.org/systems/acard/ http://supremelaw.org/patents/BayRAMFive/utility.application/award/ http://www.ddrdrive.com/menu3.html
http://www.supremelaw.org/systems/ https://old.reddit.com/r/DataHoarder https://en.wikipedia.org/wiki/Solid-state_drive
The reason I asked because I can't figure out how you can get
On Tuesday, September 3, 2019, 03:18:40 AM PDT, \0xDynamite <dreamingforward@gmail.com> wrote: persistent memory without burning circuits. An internal battery perhaps or a writable crystal, but.... how? In the early 1970's, the computer industry went from magnetic core ( https://en.wikipedia.org/wiki/Magnetic-core_memory ) to static and dynamic RAM, losing non-volatility in the process. It was possible to run a CMOS static RAM on a tiny battery, to maintain data when the main system power was turned off. The industry developed UV-erasable EPROM as a substitute, which allowed only the erasure of the entire memory chip, , and some early EEPROM. (Electrically erasable programmable Read-Only-Memory).Eventually "flash-EPROM" was developed. https://en.wikipedia.org/wiki/Flash_memory Jim Bell
The industry developed UV-erasable EPROM as a substitute, which allowed only the erasure of the entire memory chip, , and some early EEPROM. (Electrically erasable programmable Read-Only-Memory).Eventually "flash-EPROM" was developed. https://en.wikipedia.org/wiki/Flash_memory
Ah, I hadn't made the connection between FLASH drives and Flash EEPROMS. However, this pushes the question back: how would an EEPROM do it? Old PROMs used to burn fuses to maintain state, but how to restore state, eh? I believe that one could make flash drives that start at all-1s and then burn the 0s into the memory. A small battery-powered device could maintain the address of the next writable word, otherwise once the device reached the end of memory, it would no longer be useful for. writing. Anyway, cheers!
On Wednesday, September 4, 2019, 10:15:00 PM PDT, \0xDynamite <dreamingforward@gmail.com> wrote:
The industry developed UV-erasable EPROM as a substitute, which allowed only the erasure of the entire memory chip, , and some early EEPROM. (Electrically erasable programmable Read-Only-Memory).Eventually "flash-EPROM" was developed. Flash memory
| | | | | | | | | | | Flash memory Flash memory is an electronic (solid-state) non-volatile computer storage medium that can be electrically erased... | | |
Ah, I hadn't made the connection between FLASH drives and Flash EEPROMS. However, this pushes the question back: how would an EEPROM do it? Old PROMs used to burn fuses to maintain state, but how to restore state, eh?
I believe that one could make flash drives that start at all-1s and then burn the 0s into the memory. A small battery-powered device could maintain the address of the next writable word, otherwise once the device reached the end of memory, it would no longer be useful for. writing.
These devices injected a tiny electric charge into a "floating gate", an otherwise-insulated conductor surrounded by an extremely good insulator. https://en.wikipedia.org/wiki/Floating-gate_MOSFET The level of insulation required was phenomenal: In order to store a bit of data for many decades, an effective resistance of over 10*20 ohms would have been necessary. If you assume a capacitance of one picofarad (10E(-12) farads) in parallel with 10**20 ohms, that's a time constant of 10**8 seconds, or 3 years. Erasing an EPROM with UV light activated electrons into 'conduction bands' that would not ordinarily be populated, and thus erase the entire device. The first EPROM I ever heard of was the Intel 1702 2 kilobit (256 by 8 bits) device, of which I used one: As the program store of the "Dyna-Micro" single-board computer that I built in 1977. It was extremely difficult to program, requiring very high voltages. The next EPROM I used was a 2708 device, which was far easier to program. Jim Bell
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