<div id="readability-page-1">KAWASAKI, Japan--(BUSINESS WIRE)-- Toshiba Electronic Devices &amp; Storage Corporation (“Toshiba”) has announced the M12 Series of 3.5-inch[1] nearline hard disk drives (HDDs) for hyperscale and cloud service providers. The new M12 HDDs employ Shingled Magnetic Recording (SMR) technology to deliver storage capacities[2] ranging from 30 to 34 TB[3]. Sample shipments of SMR-based HDDs have begun with plans to begin sample shipments of Conventional Magnetic Recording-based (CMR) models with capacities up to 28TB to commence in the third quarter of 2026. March 31 happens to be World Backup Day, the annual international initiative to remind companies and individuals of the importance of backing up and protecting their data. That need is now more important than ever given the widespread adoption of cloud services, video content, and most recently, the emergence of data-centric AI technology. All of factors are fueling the explosive growth of digital content and the amount of data stored. The requirement from data centers, the repositories for most of the world’s digital data, is for higher-capacity, better performing HDDs to support more efficient system configurations. The M12 Series is designed to meet these requirements by significantly increasing storage capacity in the standard 3.5-inch nearline HDD form factor. M12 Series HDDs leverage Toshiba’s proprietary design and analysis technologies cultivated through the development of slimmer and more compact components. Additionally, the new M12 is the first glass substrate nearline HDD for Toshiba, and the use of glass substrates increases the HDD’s durability while enabling thinner designs. The HDDs are enclosed in helium and combine Toshiba’s proprietary Flux Control Microwave-Assisted Magnetic Recording (FC‑MAMR™) technology with SMR to achieve storage capacities of 30 to 34TB. SMR technology increases recording density by overlapping data tracks similar to roof shingles; however, overlapping process degrades random write operations. To overcome this, M12 HDDs utilize a host-managed SMR architecture, in which the host system manages data placement and rewriting within the drive. This approach improves data handling and reduces performance degradation in server and storage system environments. The new M12 SMR HDDs reach a maximum data transfer rate of 282MiB/s[4], an improvement of approximately 8%, while power consumption efficiency per terabyte (W/TB) is approximately 18% lower than previous generations. Designed for continuous 24/7 operation, the M12 Series supports an annual workload[5] rating of 550TB and offers an MTTF/MTBF[6] of 2.5 million hours with an annualized failure rate (AFR) of 0.35%. To meet the growing storage demand of data centers, Toshiba plans to introduce next-generation products based on Heat Assisted Magnetic Recording (HAMR) and 12-disk configurations[7] in upcoming quarters. For more information on Toshiba’s full line of HDD storage products, please visit: https://toshiba.semicon-storage.com/ap-en/storage.html [1] &#34;3.5-inch&#34; means the form factor of HDDs, and is not the HDD’s physical size. [2] Range of storage capacity with variable capacity formatting applied. [3] Definition of capacity: One terabyte (TB) = one trillion bytes, but actually available storage capacity may vary, depending on operating environment and formatting. Available storage capacity (including examples of various media files) will vary based on file size, formatting, settings, software and operating system and/or pre-installed software applications, or media content. Actual formatted capacity may vary. [4] Read and write speeds may vary depending on the host device, read and write conditions, and file size. [5] Workload is a measure of data throughput in a year, and it is defined as the amount of data written, read or verified by commands from the host system. [6] MTTF/MTBF (mean time to failure/mean time between failure) is not a guarantee or estimate of the product life; rather it is a statistical value related to mean failure rates for a large number of products which may not accurately reflect actual operation. The actual product life of the product may vary. [7] “Toshiba First in Industry to Verify 12-Disk Stacking Technology for Hard Disk Drives” announced on October 14, 2025. * FC-MAMR™ is a trademark of Toshiba Electronic Devices &amp; Storage Corporation. * Other company names, product names, and service names may be trademarks of their respective companies. * Information in this document, including product prices and specifications, content of services and contact information, is current and believed to be accurate as of the date of the announcement, but is subject to change without prior notice. <img src="https://imageproxy.pbkrs.com/https://cts.businesswire.com/ct/CT/query-ZGlzdHJvPW54JmlkPWJ3bmV3cyZsYW5nPWVuJnNpZD1hY3FyOCZzdHk9MjAyNjAzMzAzNTk1MjFyMQ?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" original-src="https://imageproxy.pbkrs.com/https://cts.businesswire.com/ct/CT/query-ZGlzdHJvPW54JmlkPWJ3bmV3cyZsYW5nPWVuJnNpZD1hY3FyOCZzdHk9MjAyNjAzMzAzNTk1MjFyMQ"/>View source version on businesswire.com: https://www.businesswire.com/news/home/20260330359521/en/ Source: Toshiba Electronic Devices &amp; Storage Corporation</div>

東芝

東芝推出了 M12 系列 3.5 英寸近線硬盤驅動器（HDD），專為超大規模和雲服務提供商設計，採用疊瓦式磁記錄（SMR）技術，存儲容量為 30 至 34TB。樣品已開始發貨，計劃在 2026 年第三季度推出最高可達 28TB 的常規磁記錄（CMR）型號。M12 HDD 提升了數據處理和性能，最大數據傳輸速率達到 282MiB/s，並改善了能效。該硬盤設計用於 24/7 不間斷運行，支持每年 550TB 的工作負載評級，平均故障時間為 250 萬小時

東芝開始提供 30-34 TB SMR 近線硬盤的樣品