30.72TB SSD: Which Enterprise Drives Reach It, NVMe or SAS, and UK Prices

30.72TB SSDs in maker documents

At 30.72TB the drives named in maker documents do not share an interface or a shape. Two are 2.5-inch NVMe drives a PCIe generation apart, one comes in EDSFF shapes as well as U.2, and one is SAS.

For three of the four, 30.72TB is the top step. Micron offers the 9400 PRO at 7,680GB, 15,360GB and 30,720GB, KIOXIA's CM7-R brief stops at 30.72 TB, and Samsung's PM1643 list ends there too. Solidigm's D5-P5336 is the exception: its page lists 61.44TB and 122.88TB above it.

Your server's connection decides between them before any figure does. A U.3/U.2 bay on PCIe, a PCIe 5.0 host, an EDSFF slot and a SAS controller are different things, so check the interface, the form factor and the drive height in your server's own documents.

30.72 TB SSD NVMe: Micron 9400 PRO against KIOXIA CM7-R

The newer interface wins on sequential read, but not everywhere. On these figures the Micron has twice the random write of the KIOXIA at this size, 300K against 150K IOPS, and the two are close on random read. So a Gen5 host gets more from the KIOXIA on large transfers, while a workload of small random writes leans the other way. The power rows use different measures, maximum RMS against typical, so we would not call either drive the lower-power one.

Endurance is closer than the two labels suggest. Micron gives a total, 56,064TB written; on our arithmetic that is exactly 30.72TB written once a day for five years of 365 days, the same one drive write a day that KIOXIA states for the CM7-R. At this size, one drive write a day means about 30.72 TB of writes every day.

Kioxia 30.72 TB SSD: the CM7-R at its largest size

KIOXIA's CM7-R brief says the series delivers 1 DWPD and supports capacities up to 30.72 TB. The 30,720GB model's SIE number is KCMYXRUG30T7, with SED and FIPS SED versions beside it.

The largest CM7-R is not its fastest. At 30,720GB the brief gives up to 10,000 MB/s sequential read, against 14,000 MB/s at 15,360GB and every smaller size, with 4,900 MB/s sequential write and 150K IOPS of random write. If speed per drive matters more than capacity per bay, the 15,360GB model is the stronger row. The Kioxia CM7 page prints the full per-capacity grid and the model strings for every option.

30.72 TB SAS SSD: Samsung PM1643

The SAS drive at this size is Samsung's PM1643. Its 12G SAS brochure lists capacities of 960GB, 1.92TB, 3.84TB, 7.68TB, 15.36TB and 30.72TB, a 12 Gbps SAS host interface, endurance of 1 DWPD for 5 years, and power consumption of 13.5 W active and 5 W idle.

So on endurance the SAS drive matches the two 2.5-inch NVMe drives above, at one drive write a day. A SAS drive suits a server built around SAS bays rather than NVMe ones, and the SAS vs NVMe page sets out how the two interfaces differ.

Solidigm 30.72TB SSD: the D5-P5336

Solidigm's D5-P5336 page lists 30.72TB among five capacities: 122.88TB, 61.44TB, 30.72TB, 15.36TB and 7.68TB. It describes the drive in E3.S, E1.L and U.2 form factors, so the 30.72TB model may not be a 2.5-inch drive at all. We have not found a Solidigm document giving the 30.72TB model's endurance or speed, so check the form factor and ask the seller for Solidigm's figures before you buy.

30.72 TB SSD price on Amazon.co.uk

The table holds no listings right now. Prices are pounds sterling inc VAT, sorted per TB, and each row shows its condition. The table takes every enterprise SSD listing we record at 30.72TB, whatever its interface.

Before you press Buy on Amazon, match the part number. Micron's 9400 code for 30,720GB is 30T7, and KIOXIA's CM7-R strings at that size also end 30T7, so the ending alone does not tell you the maker or the series. Read the whole string and the interface together.

If one drive per bay is not essential, the 15.36TB SSD page covers the next size down, where more makers and listings sit. The Micron 9400 page carries Micron's full capacity table.

In-stock alternatives

None of these is the product this page covers: they are what is in stock on Amazon.co.uk beside it right now. Each row says why it is listed. Check the interface, form factor and part number against your system before buying.