Hadoop performs best when each node has exclusive use of its disk. Therefore, if you have a choice, try to provision exclusive use of individual spindles on your SAN and map each one to a separate mount on your Hadoop nodes. Anything other than that will tend to produce poor performance due to disk contention.
john From: Natarajan, Prabakaran 1. (NSN - IN/Bangalore) [mailto:prabakaran.1.natara...@nsn.com] Sent: Thursday, June 12, 2014 12:00 AM To: user@hadoop.apache.org Subject: Hadoop SAN Storage reuse Hi I know SAN storage is not recommended for Hadoop. But we don't want waste - already existing SAN Storage. How can we make use of SAN Storage for Hadoop - what are the best methods, can a Ethernet upgrade helps,...? Thanks Prabakaran.N
