Proof / Benchmark

Erase-time benchmarks

This page summarizes 2023 to 2026 MASAMUNE operating logs across mobile and storage workflows. These are not synthetic lab numbers. They are field logs cleaned with IQR-based outlier control.

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3 yearsoperating logs

IQRoutlier control

7main device groups

NISTmethod comparison

Who this page helps

Teams estimating operational time before rollout
Organizations comparing HDD, SSD, and NVMe behavior
Operators who need a data-backed timing explanation for customers

How to read it

Field logsThese values come from live customer operations.

Outlier controlValues beyond 3×IQR were excluded.

Method mattersMedia type and erase method change the result dramatically.

Context: These numbers are references derived from real operating logs. Actual erase time still depends on media health, method, connectivity, and target condition.

Device group	Average	Median	Min	Max	Avg speed
iPhone	18m 28s	15m 30s	26s	1h 8m	N/A
iPad	13m 56s	11m 21s	1m 20s	47m	N/A
Android	8m 11s	7m 48s	44s	25m 40s	N/A
NVMe SSD	16m 3s	15m 25s	1m 29s	39m 37s	344 MB/s
SATA SSD (M.2)	12m 1s	12m 36s	3m 57s	19m 21s	280 MB/s
SATA SSD (2.5")	25m 42s	17m 48s	2m 23s	1h 47m	344 MB/s
HDD	2h 5m	1h 34m	22m	8h 4m	116 MB/s

NVMe is different

Hardware-driven NVMe paths behave very differently from HDD or SATA SSD workflows.

iPhone timing varies by model

IPSW size and generation matter, so flat timing assumptions are usually weak.

HDD scales with capacity

Write speed limits make larger HDDs much easier to estimate in hours.

Extreme times are a signal

Very long results often point to defective drives or unstable conditions.

Year-over-year trend

Device	2023	2024	2025	Trend
iPhone	22m 15s	19m 42s	18m 28s	17% faster
Android	9m 30s	8m 45s	8m 11s	14% faster
NVMe SSD	19m 20s	17m 10s	16m 3s	17% faster
HDD	2h 30m	2h 15m	2h 5m	17% faster

Method comparison

Method	Average	Median	Min	Max	NIST level
Apple iOS (IPSW Restore)	20m 37s	15m 26s	2m 50s	5h 47m	Purge
Android OS (Factory Reset)	8m 21s	7m 47s	44s	1h 1m	Clear
Zero Fill (1-pass)	1h 52m	18m 30s	48s	8h+	Clear
ATA Secure Erase	1m 10s	1m 10s	1m 10s	1m 10s	Purge
NVMe Crypto Erase	<1s	<1s	<1s	<1s	Purge
DoD 5220.22-M (3-pass)	5h 54m	55m	2m 24s	24h+	Purge

Capacity trend

Capacity band	Average	Median	Typical device
0–16 GB	8m 48s	7m 18s	Older smartphones
16–32 GB	11m 45s	9m 24s	Budget smartphones
32–64 GB	18m 54s	13m 33s	Phones, iPads
64–128 GB	18m 48s	12m 58s	iPhones, SSDs
128–256 GB	1h 22m	13m 12s	SSDs, premium phones
256–512 GB	55m 37s	56m 26s	SSDs
512 GB–1 TB	2h 3m	1h 56m	SSDs, HDDs
1–2 TB	3h 36m	3h 31m	HDDs
2–4 TB	5h 28m	5h 39m	HDDs
4 TB+	12h+	12h+	NAS / archive HDDs

We can map these timings to your own hardware mix.

If you already know your media mix and method expectations, we can frame the likely time profile before rollout.

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