Hitachi Hard Drive is now a Western Digital
Western Digital is the second largest hard drive manufacturer and Hitachi is the third largest manufacturer of hard drives in the world. Seems like all of the hard drive manufacturers are consolidating so now your Hitachi hard drive is now a Western Digital.
Seagate is the largest manufacturer of hard drives and it just purchased Samsung's hard drive division in April. Regulators only approved the Western Digital's purchase after assurances that the company would sell off some its plant assets, which includes a manufacturing plant as well as they need to transfer some intellectual property to the new division being put on the auction block. The final purchase will take place after Western Digital sells the necessary assets.
So basically we went from 4 to 2 hard drive manufacturers in under a year. This can only mean that competition will diminish and prices will go up even further. The floods earlier this year already caused manufacturing issues and created shortages of hard drives. This will only compound the problem. Test your hard drive if you think it has a problem.