On Tue, Dec 21, 2010 at 12:55 PM, Stefan Seyfried <stefan.seyfried@googlemail.com> wrote:
On Tue, 21 Dec 2010 09:01:09 -0600 Larry Finger <Larry.Finger@lwfinger.net> wrote:
As this drive was my second WD Green 1 TB drive, I did not expect any problems, thus I installed, partitioned, and formatted it normally. Only when the performance took a major hit did I discover the nuances of the model number.
Now you're scaring me. Which WD Green 1TB drives are 4k and which are old-fashioned?
I have a WD10EADS and it has only one partition on it:
server:~ # parted /dev/sdc print Model: ATA WDC WD10EADS-00L (scsi) Disk /dev/sdc: 1000GB Sector size (logical/physical): 512B/512B
Assuming the drive is telling the truth, its the traditional style 512B physical sector. The new drives should report 512B/4096B I believe. But those green drives are nasty regardless. They tend to have very short idle periods before unloading the head. I've even seen error reports in windows where they cause applications to malfunction. Truly bad drives IMHO. I think the smart param that tracks the issue is Load_Cycle_Count. Most drives are only rated for 50,000 or so of those per lifetime. The green drives without special handling under linux will use those up in a year. Personally I just avoid the green drives like the plague, but since you have one you should look into Load_Cycle_Count and if its too high get your drive added to "storage.fixup" I don't know if that's in kernel or userspace, but it is a config file, etc. that is used to tell the linux kernel that the drive is not well behaved and to take special action to keep it from unloading the heads excessively. Tejun Heo is the maintainer for storage.fixup I believe. Greg -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-factory+help@opensuse.org