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HDD compatibility to rebuild for RAID

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linux-howto

http://serverfault.com – Last year we build a RAID 1 with Western Digital 2 TB drive model number WD20EARS. Unfortunately one of the drives failed. We are unable to find any new drives of the same model number. What do we do? Is it possible to use another drive which is compatible. Options are WD20EZRX. In case a particular model number availability is an issue what are best practices in figuring out what may work to rebuild RAID (HowTos)