Runs in your browser
Simulators that show how flash behaves, checks you can run on your own drive, and two interactive 3D references. Nothing to install.
Pick a categoryEverything here runs on your device. No uploads, no accounts.
Change one thing in a model of flash and watch what follows.
Read a SMART report or confirm TRIM is on, using your own drive. Your drive data stays on your device.
Rotate a drive or a memory package and click a part to see what it does.
Simulators
Change one thing in a model of flash and watch what follows.
How a bit is stored in a cell, how it goes wrong, and what the error rate means for a drive.
An interactive threshold-voltage simulator that shows how P/E cycling, retention, temperature and read disturb push NAND cells toward bit errors.
Try this: Choose Wear in the walkthrough, then drag a read reference on the bench chart and watch the error-correction ladder change.
Open NAND Cell LabTry this: Set an error rate and a code strength and watch the uncorrectable bit error rate move, then check how many drives a rating needs.
OpenTry this: Read one cell, add the cells around it, and watch the sneak current take the signal, then add a selector.
OpenTry this: Step through one 4KiB read in ten frames, then switch DRAM or DRAM-less and fresh or worn pages, and read the time on the bench.
OpenHow the firmware places, moves and parallelizes writes, and what heat does to the speed.
A flash translation layer and garbage-collection simulator that shows how overprovisioning, workload, TRIM and data placement change write amplification.
Try this: The card opens the 80-20 hot-cold drive from setup 4, Hot and cold data. Choose Separated and give it about 30 seconds: write amplification settles near 2.2 instead of about 2.4.
Open FTL & GC SandboxTry this: Scroll through the five presets, from one die to a mismatched controller and die, and watch which of the three bars is lowest.
OpenTry this: Scroll through before and after maps of defrag on a simulated SSD, then try the fixes in the sandbox.
OpenTry this: Pick a way for a simulated drive to throttle and watch temperature and speed change on one chart: steps, pacing, a Gen5 to Gen4 link drop, or a shutdown.
OpenTry this: Press play and follow one 4KB write from the host command to a programmed NAND cell, one frame at a time.
OpenWhat survives a power cut, what a delete leaves behind, and how a drive encrypts.
Cut power to a simulated SSD mid-write and see which writes come back, with and without capacitor-backed power loss protection, old capacitors and flushes.
Try this: Scroll the five sections to see what capacitors, fsync and age change, then drag any setting in the sandbox and watch the cells.
Open Power Loss LabTry this: Press Play to run the 16-byte block through round 1, then drag the avalanche bit slider and watch how many output bits change.
OpenTry this: Read six tests of delete, format, overwrite and sanitize on one simulated drive, and count what is still on the chips.
OpenWorks on your data
Read a SMART report or confirm TRIM is on, using your own drive. Your drive data stays on your device.
A browser tool that opens on a made-up example drive already decoded, then reads NVMe SMART / Health logs and Identify Controller data from nvme-cli, smartctl or raw hex, with endurance numbers.
Try this: Read the decoded example drive, then change the TBW rating and capacity to see remaining life.
Open NVMe SMART DecoderA browser checker for SSD TRIM. Run one read-only command, paste the output, and get a plain-language verdict on whether TRIM is on and what to do next.
Try this: Run the one command for your system, then paste what it prints over the real example result.
Open TRIM CheckInteractive references
Rotate a drive or a memory package and click a part to see what it does.
An interactive 3D reference that takes an M.2 NVMe SSD, an HBM stack and a DDR5 memory stick apart, from the package down to one memory cell.
Try this: Take an SSD or an HBM stack apart, from the package down to one cell.
Open AtlasContinue on this site
