CIO Review : Disaggregated Commodity Storage Direct attach SAS and SATA are dead

//CIO Review : Disaggregated Commodity Storage Direct attach SAS and SATA are dead

CIO Review : Disaggregated Commodity Storage Direct attach SAS and SATA are dead

2018-10-29T01:29:09+00:00

 by Timothy G. Smith

The Problems with Commodity Servers with Direct Attached Storage

Commodity servers for use in large clusters have two huge benefits: low cost and high bandwidth between the storage and the compute resources. However, there are several problems:

Over Provisioning: Since the storage must be ordered in the server at purchase time and, at scale cannot realistically be changed for the lifetime of the server, we had to make sure we would not run out of storage space or I/O bandwidth during the lifetime of the server instead of tuning the space and I/O bandwidth per application. So we loaded each of our Hadoop and Vertica nodes with 24 x 2.5” disk drives not because we definitely needed them but just so we would not run short if we do need them. We did the same with flash drive in the Aerospike nodes…. Continue Reading

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