Petit HS, mais attention aux DD WD green en utilisation RAID :
Thank you for contacting Western Digital Customer Service and Support. My name is Joan R.
Is this NAS device working on a RAID? If so, Western Digital manufactures desktop edition hard drives (Caviar Green) and RAID Edition hard drives. Each type of hard drive is designed to work specifically in either a desktop computer environment or a demanding enterprise environment.
If you install and use a desktop edition hard drive connected to a RAID controller, the drive may not work correctly unless jointly qualified by an enterprise OEM. This is caused by the normal error recovery procedure that a desktop edition hard drive uses.
When an error is found on a desktop edition hard drive, the drive will enter into a deep recovery cycle to attempt to repair the error, recover the data from the problematic area, and then reallocate a dedicated area to replace the problematic area. This process can take up to 2 minutes depending on the severity of the issue. Most RAID controllers allow a very short amount of time for a hard drive to recover from an error. If a hard drive takes too long to complete this process, the drive will be dropped from the RAID array. Most RAID controllers allow from 7 to 15 seconds for error recovery before dropping a hard drive from an array. Western Digital does not recommend installing desktop edition hard drives in an enterprise environment (on a RAID controller).
Western Digital RAID edition hard drives have a feature called TLER (Time Limited Error Recovery) which stops the hard drive from entering into a deep recovery cycle. The hard drive will only spend 7 seconds to attempt to recover. This means that the hard drive will not be dropped from a RAID array. Though TLER is designed for RAID environments, it is fully compatible and will not be detrimental when used in non-RAID environments.
I hope that we have met your expectations today and that you are satisfied with our service. If you have any further questions, please reply to this email and we will be happy to assist you further.
Western Digital Service and Support
Topic NAS d'ou vient le texte :http://forum.qnap.com/viewtopic.php?f=1 ... 7&start=30
Mais une recherche google et visiblement il y a un vrai problème avec le DD WD green utilisés en raid
1. Western veut vendre la gamme RE, chère.
2. Il existe un utilitaire chez western digital sous DOS pour éviter cela avant de les mettre dans un NAS ou utilisation RAID
3. ZFS s'en fout ^^