And then there were two...

This acquisition was announced today:

Seagate has acquired Samsung Electronics’ hard disk drive (HDD) operations for $1.37 billion in a move that boils the market down to two players. Seagate and Western Digital now control 90 percent of the HDD market with Toshiba a distant third.

Under the terms of the deal, Samsung will lump its HDD unit into Seagate in exchange for a cash and stock deal worth $1.375 billion. Samsung will own nearly 10 percent of Seagate and the two companies will cross-license patents. Samsung will also provide NAND flash memory for Seagate’s solid-state drives. In addition, Seagate will supply drives for Samsung’s PCs.

Last year WD acquired Hitachi's hard drive products and it looks like we have only two major players left.