Today’s Limitations

• Distance between the machines and storage devices

  • max. 25 m
    • Vaulting is needed to protect data
    • Servers need to stand close to the SCSI devices

• Throughput of SCSI

  • Usually 20 MB/s
  • 40 MB/s for ultra SCSI (not very common)

• Connectivity for devices

  • On the server
    • max 9 HSC interfaces on K-Class
    • max 32 PCI interfaces on V-Class
  • Becomes a bottleneck for performance
• 1 tape drive only used by one server
  • Becomes a bottleneck for performance

• Network bandwidth used for backup

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