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.
From: Natarajan, Prabakaran 1. (NSN - IN/Bangalore) [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 12, 2014 12:00 AM
To: [EMAIL PROTECTED]
Subject: Hadoop SAN Storage reuse
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,...?