User Storage

User Storage

1. Storage Area Network

   • File System managed by servers
   • Fault-Tolerant Network
   • Archives files not needed immediately
   • Behaviour predictable and controlled
   • Protocols used:SAT,SCSI
   • High performance in high speed traffic systems
   • Speed
     • high speed using fiber channel
     • 16Gb/s to 32 Gb/s
     • delived using high speed ethernet

2. Network Attached Storage

   • File system mananged by head unit
     • data is identified by file name as well as byte offset.
   • Comparatively less expensive
   • Protocol used are File Server,CIFS
   • not suitable for high speed traffic
   • Subject to ethernet issues
   • easier to manage
   • Speed
     • speed decreases with no. of users
     • 1 to 10GB/s
     • slow and high latency expected