Strata IT Training
Chapter 10
Advanced Storage Topics
Using Hard Drives (HDD) (217)
• Installation– PATA installation– SATA installation
• Logical Configuration– Partitioning
• Establish storage size on drive surface• Assigns a drive letter
– Formatting• Provide file and data organization
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PATA Disk Installation
• Molex power connecton
• Ribbon Cable• Drive selection
– Master– Slave
• Cable select• Drive Jumper
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SATA Versions
• SATA - 2003– 1.5Gbps bandwidth– Throughput - 150MBps
• SATA II– 3.0 Gbps bandwidth– Throughput 300 MBps
• SATA III - 2008– 6 Gbps bandwidth– Throughput 600 MBps
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• Partition– Creates distinct storage areas
– Use Disk Management utility
– Assigns a drive letter
• Each partition appears as separate drive
• Format– Creates a file system on a partition
– Necessary for OS to access that storage area
– File system types:
• FAT and FAT32
• NTFS
Disk Setup
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Disk Manager• Right-click Computer• Click Manage• Click on Disk
Management• Initialize disk
– Basic– Dynamic
• Allows combining multiple drives
• Create disk partition– Also shrink a disk partition
• Format disk– NTFS or FAT32Computer Technology
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Storage Topics
Demo Time
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Flash-Based (219)
• Solid state – nonvolatile memory– Like RAM, but does not require power to retain
contents– No moving parts
• Immune to vibrations
• Used in portable devices• Limited but growing capacity
– 2 GB – 32 GB
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Flash Memory Types
• CompactFlash• SD (Secure Digital)
– SDHC– SDXC– miniSD
• Memory Sticks• USB flash drives (jump drives)
– 256 GB or more
• Formats are not inter-changable
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SSD Drives
• Work on same technology as flash memory packaged in hard drive enclosure.
• Much Higher Speed than HDD• Higher cost than HDD• Lower capacity than HDD• Do not have performance issues such as
fragmentation that occur with HDD• Have limited number of read/write cycles
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SSD Drive Shopping
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Demo Time again
Comparing HDD and SSD
• HDD have highest capacity and cost less– Up to 4 TB per drive– SSD are generally less than 500 GB (1/2 TB)
• SSDs degrade with repeated deleting and rewriting of data making them slower and more errors.– Do not Defragment SDD drives
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SCSI (226)
(Small Computer System Interface)
• Older technology• Network of devices
– SCSI Chain
• Used mostly with servers• Require separate controller card
– Host adaptor
• Ribbon cable– 50 – 68 – 80-pin cable
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SCSI Chain
• Each device must be assigned a unique device ID (0-15)– Determines priority
• 7 highest –> 0 • 15 -> 8
• Each end of the chain must be terminated.
• Up to 16 devices on SCSI-2
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End of Chapter 10 Presentation