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Toshiba CMR 3.5in

Toshiba N300 4TB

4TB

Model HDWG740EZSTC

rpm
7,200
MB cache
512
TB/yr
180
yr warranty
3

N300 range, also in 8 TB, 12 TB

Who the N300 4 TB is for

For a 2- to 8-bay box that lives in a cupboard it's a good fit, and 7,200 rpm gives it a bit more pace than the slower NAS drives. Recording is CMR, the right kind for RAID and ZFS.

Watch out for

Bigger box than that? Look at a pro or data-centre line instead. Warranty's three years and the workload rating is 180 TB a year. At 4 TB that's 45 full passes of the drive a year, and a monthly scrub uses twelve of them before you've written anything.

Backblaze doesn't run enough of these for a failure rate we'd publish. A 4-bay box full of these gives 12 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 N300 4TB specifications
Capacity 4 TB source for Capacity (toshiba-storage.com, opens in new tab)
Spindle speed 7,200 rpm source for Spindle speed (toshiba-storage.com, opens in new tab)
Recording technology CMR source for Recording technology (toshiba-storage.com, opens in new tab)
Cache 512 MB source for Cache (toshiba-storage.com, opens in new tab)
Interface SATA 6Gb/s source for Interface (toshiba-storage.com, opens in new tab)
Form factor 3.5in source for Form factor (toshiba-storage.com, opens in new tab)
Workload rating 180 TB/yr source for Workload rating (toshiba-storage.com, opens in new tab)
MTBF / MTTF 1,000,000 hours source for MTBF / MTTF (toshiba-storage.com, opens in new tab)
Rated for NAS bays (max) 8 bays source for Rated for NAS bays (max) (toshiba-storage.com, opens in new tab)
Warranty 3 years source for Warranty (toshiba-storage.com, opens in new tab)

Sources: toshiba-storage.com

Failure rate

Backblaze doesn't run this model, or not in big enough numbers. We only publish a rate with at least 60 drives and 50 drive-years behind it, because below that the error bars are too wide to tell you anything. The reliability page has every model that clears the bar.