Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups
Skins
  • Light
  • Brite
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Darkly)
  • No Skin
Collapse
Brand Logo
ohirO

ohir@social.vivaldi.net

@ohir@social.vivaldi.net
About
Posts
2
Topics
0
Shares
0
Groups
0
Followers
0
Following
0

View Original

Posts

Recent Best Controversial

  • Security nerds have launched a Gofundme to buy back securityfocus.com, a domain that hosted the Bugtraq site and more than 120,000 links from the National Vulnerability Database that are now dead.
    ohirO ohir

    @briankrebs It would be way better for "security nerds" to register securityfocus.is or whatever.eu and supply the non nerd community with `s/securityfocus.com/whatever.eu/` solution.

    Were times better the ACPA and pro bono lawyers would be enough.

    Uncategorized

  • TIL that SSDs can lose data if left unplugged for long periods of time (only required to hold data up to 1 year), unlike HDDs which as long as the material holds it can take years.
    ohirO ohir

    @djlink I can attest with both research and anecdata.
    TL;DR do not fill up your SSD to make it persist in a drawer. The less it keeps, the longer it keeps. Write backups to the hot device, keep your drawer cold.

    1. Most high capacity SSD nowadays use dynamic configuration for blocks, with vital areas like ECC or most hot data being kept in blocks configured as SLC. So in "pro" products with >75% free space everything will be in SLC configured blocks. Then hot data will migrate to 2b/c blocks. If medium (chips) the longevity will be worse. A decade ago most versed in technology hackers were statically reprogramming TLC areas to SLC. Now this belongs to the controller.
    2. For most flash media technologies on the market the Δt° between write and storage matters. Longevity increases if cell was written hot then stored cold. Some TLC pendrive makers knew that, then got bashed by unaware customers complaining.
    3. side note: contrary to popular understanding, it is not the "write" that wears-out cells, but "erase" operation.
    https://dl.acm.org/doi/10.1145/3487064

    Anecdata: last lasting flash SSDs I have were made of 19nm 2b/cell chips from Toshiba. Then were marketed as MLC. Two year drawer rest was ok, 4yr was too long. Filled-up TLC SSDs after year retained only directory structure. What made me to research I shared. TC.

    Uncategorized
  • Login

  • Don't have an account? Register

  • Login or register to search.
Powered by NodeBB Contributors
  • First post
    Last post
0
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups