Toshiba Enterprise Hard Drives by Capacity: Which MG Generation Sits at 4 TB to 24 TB

Toshiba enterprise hard drive capacities: which generation exists at each size

This map is our arrangement of Toshiba's documents, one overview or web page per MG line, and not a single Toshiba table. Toshiba Europe's MG Series page gives the wider span, formatted capacities from 1 TB to 24 TB. This page covers 4 TB upwards.

Read down the first column and the choice narrows at both ends. 24 TB has one generation behind it and 14 TB has four. Among the documents we read, the bottom three rows are the D lines alone, which have their own documents and their own ratings. The map shows what the documents list, so a size with several generations here can still have few rows in a live table below.

Two entries need a caveat. Toshiba's 2022 MG10 SATA overview lists 16 TB numbers, while the capacity line on the MG10 web page gives 20 TB and 18 TB only. We print both and do not choose. And Toshiba Europe's range table, as extracted, lists MG09, MG10 and MG11 prefixes with no MG07 or MG08 prefix. That is what the table lists; we have not found a document saying either generation has ended.

How buffer and sustained speed step up between Toshiba generations

Buffer moves in two jumps. MG07 sits at 256 MiB, MG08 doubles it to 512 MiB, and MG11 doubles it again to 1 GiB. The D lines repeat the first jump on their own track, 256 MiB on MG08-D and 512 MiB on MG10-D. So a newer generation name does not always mean more buffer: MG09, MG10 and MG10F all print the same 512 MiB as MG08.

Sustained speed climbs more slowly, and it is easier to see with capacity held still. At 14 TB the printed figures run 248, 262, 268 and 281 MiB/s across MG07, MG08, MG09 and MG11. At 18 TB they run 268, 268 and 281 MiB/s across MG09, MG10 and MG11, so MG10 added 2 TB over MG09's top size with no printed speed gain. At 22 TB it is 271 MiB/s on MG10F against 285 MiB/s on MG11. The 295 MiB/s figure belongs to the 24 TB MG11 alone. These are maximum figures in MiB/s, not MB/s.

Toshiba 22TB enterprise internal hard drive, and the 24 TB top of the range

At 22 TB the standard prefixes are MG10AFA and MG10SFA for MG10F, MG11ACA and MG11SCA for MG11. The MG10 at the front of the first pair misleads, because MG10F has figures of its own. It gives 512 MiB and 271 MiB/s where MG11 gives 1 GiB and 285 MiB/s. MG10F's Idle-A power is 4.35 W on SATA and 4.82 W on SAS, and its maximum weight is 720 g. Part numbers for each are on Toshiba MG10 and Toshiba MG11.

The 22 TB table holds 4 listings right now. Lowest per TB: £36.36/TB. The wider field across makers is on 22 TB hard drives.

MG11 is the only generation we read that lists 24 TB, and it states conventional magnetic recording (CMR). Backblaze has a 24 TB row too, covered further down, on drives with an average age under six months. The 24 TB table holds 1 listing right now. Lowest per TB: £44.16/TB.

Toshiba 20TB enterprise internal hard drive: 268, 271 or 281 MiB/s

Three generations list 20 TB, so the capacity alone does not tell you which figures apply. MG10 gives 268 MiB/s with 512 MiB of buffer, MG10F 271 MiB/s with the same buffer, and MG11 281 MiB/s with 1 GiB. The gap from MG10 to MG10F is 3 MiB/s and from MG10 to MG11 is 13 MiB/s, by our subtraction. Beside that, the doubled buffer is the larger printed change.

The 20 TB table holds 2 listings right now. Lowest per TB: £44.35/TB. The prefix on each row settles the generation, and Toshiba MG series walks through those prefixes one by one. For other makers at this size, try 20 TB hard drives.

Toshiba 18TB and 16TB enterprise hard drives: 9-disk and 10-disk generations

An 18 TB Toshiba can come from a 9-disk generation or a 10-disk one. MG09's overview describes a 9-disk helium-sealed design and MG10's web page gives 10 disks, yet both print 512 MiB and 268 MiB/s. MG11, whose overview says up to a 10-disk design, is the one that moves those figures at this size. It prints 1 GiB and 281 MiB/s.

The 18 TB table holds 4 listings right now. Lowest per TB: £41.39/TB.

16 TB runs across four documents. MG08 lists it in a 9-disk generation with 512 MiB and 262 MiB/s; MG09 in a 9-disk generation with 512 MiB and 268 MiB/s; MG11 with 1 GiB and 281 MiB/s. MG10 appears only in its 2022 SATA overview, as noted above. It is also the size where Backblaze holds the most Toshiba part numbers, four between MG08 and MG09. The 16 TB table holds 1 listing right now. Lowest per TB: £23.04/TB.

The cross-maker view of this size is on 16 TB enterprise hard drives.

Toshiba 14TB and 12TB enterprise hard drives: where MG07 appears

MG07 turns up only at these two sizes, and the other generation pages in this set leave it out, so its figures sit here. The overview is Rev. 03, July 2020, with values assigned by column order, which may misplace a figure: SATA-3.3 only, CMR, 9-disk helium-sealed, 7,200 rpm, with the numbers MG07ACA14TA, MG07ACA14TE, MG07ACA12TA and MG07ACA12TE. Typical power is 8.09 W on write/read and 4.53 W at Active Idle at 14 TB, then 7.83 W and 4.25 W at 12 TB. Maximum weight is 720 g. MTTF is 2,500,000 hours, and the overview prints no AFR beside it.

If you need SAS at 14 TB or 12 TB, MG07 is out and you are looking at MG09 for both sizes, or MG08 and MG11 at 14 TB. At 12 TB the printed speed gap is 26 MiB/s, 242 MiB/s on MG07 against 268 MiB/s on MG09. At 14 TB it is wider, 33 MiB/s between MG07 and MG11.

The 14 TB table holds 3 listings right now. Lowest per TB: £23.08/TB.

The 12 TB table holds 2 listings right now. Lowest per TB: £31.25/TB.

Toshiba 10TB enterprise hard drives: two sets of ratings at one size

This is where the rating changes. A 10 TB MG09 carries the MTTF of the main MG overviews, 2,500,000 hours at 0.35% AFR. A 10 TB MG10-D is rated 2,000,000 hours at 0.44% AFR. Both print 512 MiB of buffer and 550 TB a year. So MG10 in a part number does not outrank MG09 here: on these two ratings the older name is the higher one. A rating is a figure under stated conditions and not a forecast for one drive.

The 10 TB table holds 3 listings right now. Lowest per TB: £49.50/TB. Check whether a row's number starts MG09, or MG10ADA, MG10ADP, MG10SDA or MG10SDP, before you apply either rating. A row with any other prefix gets neither rating.

Toshiba 4TB enterprise internal hard drive, plus 6 TB and 8 TB

Among the documents we read, two lines cover sizes below 10 TB. A row with another prefix, such as MG04, gets none of these figures. MG08-D uses MG08ADA and MG08ADP on SATA-3.3, MG08SDA and MG08SDP on SAS-3. MG10-D uses MG10ADA and MG10ADP on SATA-3.3, MG10SDA and MG10SDP on SAS-3.0. Both are rated 2,000,000 hours at 0.44% AFR, and the buffer is what separates them: 256 MiB against 512 MiB. MG08-D's sustained figures are 248 MiB/s at 8 TB, 239 MiB/s at 6 TB and 243 MiB/s at 4 TB, so 4 TB reads higher than 6 TB in that transcription.

Be careful with both documents. Our copies of Toshiba's PDFs are text transcriptions, so check a figure against the PDF itself before relying on it. Their power cells are left out here for that reason. The MG10-D extract lists Conventional Magnetic Recording (CMR) among its key features. The MG08-D extract states no recording technology, so we state none for that line, and CMR on another generation's overview does not carry down. MG10-D's document is dated May 2024, and that line continues below this page's range, from 1 TB on SATA and 2 TB on SAS.

The 8 TB table holds 2 listings right now. Lowest per TB: £54.41/TB.

The 4 TB table holds 2 listings right now. Lowest per TB: £74.87/TB. There is no separate 6 TB table on this page; any 6 TB row we match is in the full table further down.

Toshiba part numbers in Backblaze's fleet, with drive age stated

Backblaze's Q2 2026 table has eight Toshiba rows, drawn from its own data centres. A model enters that table only above 100 drives and 10,000 drive days. All eight sit at 14, 16, 20 or 24 TB, so it says nothing about the other sizes on this page.

Do not rank generations from this. The ages run from 67.1 months down to 5.8 months and the counts from 39,932 drives down to 905, so these rows are not like for like. The youngest row shows the lowest AFR, but the oldest row does not show the highest: that is MG08ACA16TEY at 3.66% and 53.5 months. Two failures across 905 drives is a thin base for any figure, and one operator's racks are not your enclosure. All eight numbers carry a SATA prefix, so the table has no SAS row for Toshiba.

Toshiba enterprise hard drive prices on Amazon.co.uk

The full table holds 26 listings right now. That includes 25 listings in new condition. It also includes 1 listing in used condition. Lowest per TB: £23.04/TB. Lowest outlay: £199.00. Prices are pounds sterling inc VAT, and the sort is a price order with no judgement behind it.

The filter takes every listing our catalogue files under Toshiba's MG line, from MG03 to MG11, so it can reach generations older than any document we read. For those rows the price is live and the specification is not from us. It can also hold sizes below 4 TB. N300 and S300 drives are separate lines and are kept out. Sellers write their own titles, so take capacity and interface from the part number. If a listing gives no number, ask for it before you press Buy on Amazon.

On warranty, the overviews we read state no length. 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". Its range table, as extracted, lists no MG07 or MG08 prefix, so we cannot tell whether that reaches those generations. 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. The same page says each member of the series is rated at 550 TB a year.