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Storage Information

Storage Connections
Connection Type Speed Max. Distance Scalability (devices per cable or channel)
SCSI-1 5 MBps 10 meters 7
Ultra Wide SCSI-2 80 MBps 3 meters (differential SCSI up to 25 meters) 7-15 or 3 channels to 45
Ultra SCSI-3 100 MBps 3 meters (differential SCSI up to 25 meters) 7-15 or 3 channels to 45
Fibre Channel 1.06 Gbps (800 Mbps after overhead) or 200 MBps for full duplex connection 10 kilometers 127


Storage Device Comparisons
Device Type Total Storage Size
CD-ROM 0.65GB
DVD 4.7GB


Storage Measurements
1024 bytes 1 Kilobyte (K)
1024 kilobytes 1 Megabyte (MB)
1000 Megabytes 1 Gigabyte (GB)
1000 Gigabytes 1 Terabyte (TB)
1000 Terabytes 1 Petabyte (PB)
1000 Petabytes 1 Exabyte (EB)
1000 Exabytes 1 Zettabyte (ZB)
1000 Zettabytes 1 Yottabyte (YB)


Hard Drive Volume to Cluster Sizes
Volume/Partition Size FAT16 Cluster Size FAT32 Cluster Size
up to <128MB 2K N/A
128MB to <256MB 4K N/A
256MB to <512MB 8K N/A
512MB to <1024MB 16K 4K
1024MB to <2048MB 32K 4K
2048MB to <8GB N/A 4K
8GB to <16GB N/A 8K
16GB to <32GB N/A 16K
32GB or more N/A 32K


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