Daniel KrasoÅ – stock.adobe.com
Numerous months behind Seagate and Western Digital, Toshiba attains the optimum possible in industrial HDDs and take advantage of a speed increase over its competitors
By
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Yann Serra, LeMagIT
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Antony Adshead, Storage Editor
Released: 17 Sep 2024 10:25
Number 3 in the hard disk maker’s league, Toshiba, has actually revealed items of 24TB and 28TB. These are the 24TB MG11, which is traditional magnetic recording (CMR) HDD innovation, and the 28TB MA11, which utilizes shingled magnetic recording (SMR) innovation.
Seagate was the very first to market around a year ago with comparable drives, the CMR 24TB Exos X24 and an SMR version at 28TB. Western Digital followed at the end of 2023 with its Ultrastar DC HC580 (24TB) and HC680 (28TB SMR). Toshiba’s previous HDD flagship capacity-wise was the 22TB traditional MG10F.
Toshiba’s brand-new MG11 and MA11 disk drive (HDDs) can be found in 3.5 in kind aspect. They make up 10 plates per HDD, are helium-filled, have 1GB of NAND flash as cache and revolve at 7,200 rpm. That cache size permits an optimum throughput of 309MBps. That compares to the Seagate and Western Digital items which have cache of 515MBps and peak at 295MBps and 298MBps respectively.
Toshiba disk drives utilize its unique FC-MAMR innovation. This is flux-control microwave-assisted magnetic recording, in which composes are assisted in by altering the magnetic qualities of the disk plate by utilize of microwaves.
Without this system, the electromagnetic field of the head– such as on a standard HDD– is less accurate and more extended. This indicates the information inhabits a higher location, with less saved per track, so the overall capability is lower.
The MG11 can link through 6Gbps SATA and 12Gbps SAS. The MA11 just uses 6Gbps SATA connection. That makes its throughput about half of the MG11, in the area of 150MBps.
Shingled magnetic recording innovation superposes or overlaps succeeding information tracks in a pattern similar to the method roofing system tiles overlap.
SMR difficult drives deal with a specific restraint since it’s not possible to customize the contents of a track without rewording tracks around it. This indicates SMR drives can just actually be utilized for information that’s composed once-and-for-all, such as backups, archives or files kept to be read-only.
SMR disk drives are typically utilized by hyperscalers for freezer services due to the fact that they can use the abilities required to handle restrictions that include HDDs with superposed disk tracks.
In the coming weeks, Seagate is set to reveal HDDs of the next generation, specifically 30TB in standard recording and 32TB SMR.
All that comes versus a background of spinning disk (SAS and SATA) hard disk rates that stay substantially less expensive than flash drives.
HDD expenses per gigabyte have actually held consistent for the previous year or two,