Seagate counters Toshiba bid for TDK drive head unit

Seagate Technology has submitted a counteroffer to acquire the magnetic drive head business of component supplier TDK, entering a bidding war against Toshiba. According to reports from Bloomberg, Toshiba initially attempted to purchase the unit earlier this year to safeguard its supply chain. Seagate intervened with its own offer to secure components necessary to handle expanding storage orders from artificial intelligence data centers, while TDK has declined to comment publicly on the negotiations.

If Seagate succeeds in acquiring the TDK division, it could effectively push Toshiba out of the hard disk drive market entirely. Research firm TrendForce notes that Seagate and Western Digital currently command 90% of the global market, leaving Toshiba with minimal remaining share. Unlike its two larger competitors, which manufacture their own magnetic drive heads internally, Toshiba depends heavily on TDK to supply these essential parts.

While Toshiba remains vulnerable to external component supply constraints, both Seagate and Western Digital are actively advancing high-capacity storage architectures. In February, Western Digital revealed two innovations: high bandwidth drive technology (HBDT) and dual pivot technology (DPT). The HBDT system reads and writes simultaneously across multiple heads and tracks, yielding up to twice the bandwidth found in standard drives. Meanwhile, Seagate launched a 30TB hard drive in a 3.5-inch enclosure in July, leveraging Heat-Assisted Magnetic Recording (HAMR) technology, and announced future roadmaps for 32TB and 36TB capacities.

For data center architects and enterprise IT managers, the potential buyout signals further market consolidation that could leave only two primary vendors for mass storage. Shrinking vendor options may impact enterprise procurement pricing, making it critical for data center operators to monitor drive availability while evaluating next-generation HAMR and multi-head throughput systems to meet rising AI storage workloads.