Toshiba MG09: All 60 Part Numbers at 18, 16, 14, 12 and 10 TB, SATA and SAS

Toshiba MG09 part numbers: MG09ACA and MG09SCA at every capacity

Toshiba's MG09 overview has a model table with 60 numbers: 30 on SATA-3.3 and 30 on SAS-3.0, six at each capacity on each interface. Each row gives capacity, sector format and an optional security column. This grid joins the two pages of that table. The PDF's text prints spaces inside some numbers, such as 'MG09SCA1 6TE', and we print them closed up, following the pattern of the other rows.

The table's own columns explain the letters. A final A goes with 4Kn and a final E with 512e. A trailing Y goes with the SIE option, an instant-erase model, and ACP or SCP in place of ACA or SCA goes with the SED option, a self-encrypting drive. We have not found a Toshiba document that decodes the rest of the number in words, so this is a pattern read off the rows. And 'MG09ACA' alone is not a drive. It covers 20 SATA numbers across five sizes, so a title giving only that prefix tells you nothing about capacity or sector format.

Toshiba MG09 18TB, 16TB and 12TB: MG09ACA18TE, MG09ACA16TE, MG09ACA12TE

The overview gives one buffer and one sustained figure for all five sizes on both interfaces, 512 MiB and 268 MiB/s. So a 12 TB MG09 is not printed as slower than an 18 TB one. At 268 MiB/s, about 281 MB/s, filling an 18 TB drive end to end takes about 17.8 hours, 16 TB about 15.8 hours and 12 TB about 11.9 hours. That is our arithmetic and a floor, since it assumes the maximum sustained rate throughout. Toshiba counts a terabyte as 1,000,000,000,000 bytes, so an operating system will report less.

At 18 TB the SATA 512e number is MG09ACA18TE and the SAS one is MG09SCA18TE. The 18 TB table holds 2 listings right now. Lowest per TB: £41.39/TB. Other makers at this size are on 18 TB enterprise hard drives.

At 12 TB the SATA 512e number is MG09ACA12TE and the SAS one MG09SCA12TE. The 12 TB table holds 1 listing right now. Lowest per TB: £54.42/TB. The wider field is on 12 TB enterprise hard drives.

At 16 TB the searched numbers are MG09ACA16TE on SATA and MG09SCA16TE on SAS. This page has no separate 16 TB table, so any 16 TB row our filter matches is in the main table further down, and 16 TB enterprise hard drives holds the cross-maker view. MG09ACA16TE is also the one MG09 number in Backblaze's table.

Toshiba MG09 power: three values, five capacities, none assigned

The specification table has five capacity columns and three power cells on each line. The cells are merged, and the extracted text does not show where each merge starts and stops. So the span is unproved. It would be easy to read 8.35 W as the 18 TB figure and 7.43 W as the 10 TB one, and we do not know that either is right. We hold the overview only, not the product manual, and we have not settled these cells from a rendered page. That is why this page gives no watt figure for one MG09 capacity and no W/TB figure at all.

What the positions do allow is a comparison between interfaces, because the two tables share one layout. SAS reads 0.36, 0.44 and 0.52 W above SATA on write/read and 0.33, 0.48 and 0.46 W above it at idle, left to right. Those subtractions are ours. If power budget is the reason you are reading this, budget from the highest printed value for your interface until a document ties the cells to capacities.

Toshiba MG09 specifications, SATA and SAS

The block lengths are the row to read twice. SATA models have one fixed format and one emulated format. SAS models add 520 B and 528 B host formats, and Toshiba lists Fast Format (FFMT) support for SAS. Read-modify-write is supported on the emulated rows, and Toshiba says 512e models include its Persistent Write Cache technology for data-loss protection in sudden power loss. Whether your controller accepts a given format is something to confirm with its maker.

Toshiba describes the 18 TB capacity as conventional magnetic recording (CMR) delivered with FC-MAMR, in a 9-disk helium-sealed mechanism and the standard 3.5-inch, 26.1 mm height. The MTTF assumes 8760 power-on hours a year, 550 TB a year and an average HDA surface temperature of 40 °C or less. Its application list runs from cloud-scale server and storage infrastructure to compliance archives and data back-up. That is a list of intended uses, not a statement that any particular system accepts the drive.

We have not found a weight, width or length for MG09 in the document we opened. The only dimension it prints is the 26.1 mm height. The overview prints one acoustic line, at idle, and no seek figure. It is Rev. 01, December 2021.

Toshiba MG09ACA16TE in Backblaze's fleet: one young row

Backblaze's Q2 2026 quarterly table has one MG09 row. MG09ACA16TE shows 905 drives, 68,429 drive days, 2 failures and a 1.07% AFR at an average age of 6.2 months. Its lifetime table shows the same model at 169,812 drive days, 6 failures and 1.29%, at 6.1 months. A model enters the quarterly table only above 100 drives and 10,000 drive days, so 905 drives clears the bar, but not by enough to carry much weight.

Two failures in a quarter means one more or one fewer would move that percentage a long way. The drives run in Backblaze's own data centres and have had about six months in service. So this tells you little about wear, nothing about SAS and nothing about the other four sizes. Toshiba's 0.35% is a rating under its stated conditions and is a different measure from a field count.

Toshiba MG09 prices on Amazon.co.uk

The table below holds 3 listings right now. That includes 3 listings in new condition. Lowest per TB: £41.39/TB. Lowest outlay: £653.01. Prices are pounds sterling inc VAT, sorted per TB. The sort mixes capacities and interfaces, so narrow to your own before you compare, and treat the order as a price order and nothing more.

The filter relies on the generation our catalogue reads from a listing, so a listing with a generic title can fall outside it even when its number is in the grid above. Sellers write their own titles, so take capacity, interface and sector format from the part number. If a listing gives no number, ask for it before you press Buy on Amazon.

We have found no warranty length in the MG09 overview. Toshiba Europe's MG Series page says "The MG Series comes with a 5-year limited warranty" and elsewhere "A 5-year extended warranty is also included", and that the warranty commitments "apply under the assumption that annual workload does not exceed 550 TB". It lists MG09SCA and MG09ACA among its range prefixes. That is the maker's statement, from Toshiba's web page, and it does not tell you how a particular seller or a used unit is treated.