Strata IT Training Chapter 10 Advanced Storage Topics.

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

Training6Strata IT Chapter 10 - Advanced

Storage Topics

Demo Time

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Strata IT Chapter 10 - Advanced Storage Topics

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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