WD10SPZX - CMR or SMR?

SMR

The WD WD Blue 2.5 1TB (WD10SPZX) uses SMR recording.

Verified against: Western Digital internal client HDD recording technology - SMR drives by capacity (7 July 2020) · Checked

What this means for you

Shingled recording overlaps tracks like roof tiles to raise density. Reading is unaffected, and for sequential work, archives, media libraries, backup targets, files written once and read many times, this drive is genuinely fine and the saving is real. The problem is sustained random writing, because modifying data under an existing track can force the tracks above it to be rewritten too. A RAID rebuild or a ZFS resilver is hours of exactly that pattern with no idle time to recover, so a 1TB WD10SPZX in an array can extend a rebuild dramatically, and the rebuild window is precisely when the array has no redundancy left. Do not put this drive in a NAS or a parity array.

Specifications

Model numberWD10SPZX
BrandWD
FamilyWD Blue 2.5
Capacity1TB
Form factor2.5"
Rotational speed5400 RPM
Cache128 MB
Recording technologySMR
Workload rate
Warranty
StatusCurrent
Replaced by

A dash means the manufacturer does not state that field for this exact model. We leave it blank rather than filling it from a retailer listing.

Need CMR at this capacity?

If this drive is going into an array, a NAS, or anything that rebuilds, shingled recording is the wrong choice at any price. These are conventionally-recorded drives at this capacity or one step up, in stock right now with live prices.

DriveCapacityRecording$/TBPrice
ST31000640SS 1TB SAS1TBCMR$14.99$15Buy
508011-001 1TB 6G SAS1TBCMR$26.99$27Buy
Dell 9W5WV 1TB SAS 2.51TBCMR$37.62$38Buy

Related models

Other WD Blue 2.5 capacities
WD20SPZX2TBSMR
The same capacity from other makers
ST1000LM0481TBSMRST1000LM0491TBSMRHDWL1101TBSMR
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Frequently asked questions

Is the WD10SPZX CMR or SMR?

It is SMR. That comes from Western Digital internal client HDD recording technology - SMR drives by capacity (7 July 2020), which is WD's own documentation for this exact part number rather than a capacity-level summary or a retailer listing.

Can I use the WD10SPZX in a NAS or RAID array?

We would not. Shingled recording turns a rebuild into hours of the write pattern it handles worst, which can extend the window during which your array has no redundancy. For sequential and archival use outside an array this drive is fine.

What should I buy instead of the WD10SPZX for a NAS?

A conventionally-recorded drive at 1TB or one step up. The table above lists what is in stock right now with live prices, and every model number linked there has its own verified page with the manufacturer source.

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