Some of my associates who are new to the storage solutions wanted an introductory article for understanding the components of a storage solutions, so here are some terminologies:
1) Direct attached storage [DAS ]: This is your jumbo hard-drive attached to the server directly. Tonns of vendors out in the market in this area.
2) Just a bunch of drives [JBOD]: Rack of drives put together with no intelligent functionality.
3) Network attached storage [NAS]: Network attached storage – speed of data is key for efficiency of this solution. Vendors like IBM Tivoli, HP and EMC are competiting in this space with new vendors like Dell and various other startups. These storage solutions generally have redundancy, auto-failover, failback features available.
4) Storage area network [SAN]: Storage area network
a) Drive Enclosure
b) Controllers (Management modules)
c) Switch network
d) Host Bus Adapters
e) HBA Drivers
One other thing that you should know while dealing with storage configuration is RAID model.
Redundant Array of Independent Disks
Level 0 comprises of data stripping
Level 0+1 comprises of data stripping and redundancy
Level 5 and 6 have parity driven data storage techniques but can cause performance bottlenecks
Watch the below video for more info:
