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Toshiba CMR 3.5in

Toshiba MG11 24TB

24TB

Model MG11ACA24TE

rpm
7,200
MB cache
1,024
TB/yr
550
yr warranty
5

MG11 range

Should you buy the MG11 24 TB?

It makes most sense when you're chasing terabytes per pound and the NAS sits somewhere noise doesn't matter. Think garage, or a rack in the cupboard under the stairs. Five years of warranty is the other draw, and on a drive you'll leave spinning for most of a decade that's worth having. It's also one of the better performers in Backblaze's data, with a lifetime AFR of 0.50% and an interval that stays under the 1.40% median. CMR, thankfully. SMR and parity rebuilds don't get on.

Watch out for

At 7,200 rpm it's from the louder, warmer class. Fine in a cupboard, less fun on a desk.

A 4-bay box full of these gives 72 TB after one drive's worth of parity.

Specifications

Each value links to the Toshiba page or datasheet it came from, and "Not published" means the maker doesn't list it there.

Toshiba MG11 24TB specifications
Capacity 24 TB source for Capacity (storage.toshiba.com, opens in new tab)
Spindle speed 7,200 rpm source for Spindle speed (storage.toshiba.com, opens in new tab)
Recording technology CMR source for Recording technology (storage.toshiba.com, opens in new tab)
Cache 1,024 MB source for Cache (storage.toshiba.com, opens in new tab)
Interface SATA 6Gb/s source for Interface (storage.toshiba.com, opens in new tab)
Form factor 3.5in source for Form factor (storage.toshiba.com, opens in new tab)
Workload rating 550 TB/yr source for Workload rating (storage.toshiba.com, opens in new tab)
MTBF / MTTF 2,500,000 hours source for MTBF / MTTF (storage.toshiba.com, opens in new tab)
Warranty 5 years source for Warranty (toshiba-storage.com, opens in new tab)

Sources: storage.toshiba.com, toshiba-storage.com

Failure rate

Backblaze has 9,597 of them in service as TOSHIBA MG11ACA24TE. They've clocked up 4,642 drive-years between them and 23 have died, which puts the lifetime AFR at 0.50% (95% interval 0.31% to 0.74%, the whole of that sits below the 1.40% median).

Annualised failure rate and 95% interval, lifetime and the last 4 quarters (the wider the bar, the thinner the data)
Lifetime4,642 drive-yrs 0.50%0.31–0.74
2025 Q32,400 drives 0.00%0.00–5.58
2025 Q44,739 drives 0.73%0.29–1.50
2026 Q17,200 drives 0.22%0.05–0.65
2026 Q29,597 drives 0.58%0.31–0.98

Median lifetime AFR across Backblaze drive models: 1.40%

Source: Backblaze Drive Stats, lifetime to 2026 Q2. Bear in mind that's data-centre use, which is a lot harder on a drive than a home NAS will ever be.