Wd

In my previous post I talked about Western Digital RE4-GP 2TB drive problems. In this post I present my test results for 2TB drives from Seagate and Hitachi. The test setup is the same as for the RE4-GP testing, except that I only tested 4 drives from each manufacturer. Unlike the enterprise class WD RE4-GP and Hitachi Ultrastar A7K2000 drives, the Seagate Barracuda LP drive is a desktop drive. The equivalent should have been a Seagate Constellation ES drive, but as far as I know the 2TB drives are not yet available. ...

In my previous two posts I described my research into the power saving features of various enterprise class RAID controllers. In this post I detail the results of my testing of the Western Digital RE4-GP enterprise class “green” drives when used with hardware RAID controllers from Adaptec, Areca, and LSI. To summarize, the RE4-GP drive fails with a variety of problems, Adaptec, Areca, and LSI acknowledge the problem and lay blame on WD, yet WD insists there are no known problems with the RE4-GP drives. ...

This post continues from my last post on power saving RAID controllers. It turns out the Adaptec 5 series controllers are not that workstation friendly. I was testing with Western Digital drives; 1TB Caviar Black WD1001FALS, 2TB Caviar Green WD20EADS, and 1TB RE3 WD1002FBYS. I also wanted to test with the new 2TB RE4-GP WD2002FYPS drives, but they are on backorder. I found that the Caviar Black WD1001FALS and Caviar Green WD20EADS drives were just dropping out of the array for no apparent reason, yet they were still listed in ASM as if nothing was wrong. ...

I’ve been a longtime user of Adaptec SATA RAID cards (3805, 5805, 51245), but over the years I’ve become more energy saving conscious, and the Adaptec controllers did not support Windows power management. My workstations are normally running in the “Balanced” power mode so that they will go to sleep after an hour, but sometimes I need to run computationally intensive tasks that leave the machines running 24/7. During these periods the disks don’t need to be on and I want the disks to spin down, like they would had they been directly connected and not in a RAID configuration. ...