Chanpions 100 Storage

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phoff
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296555
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Chanpions 100 Storage
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2015-02-22 19:37:11
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Chanpions 100 Storage
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Chanpions 100 Storage
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  1. LUN
    Logical unit
  2. DAS
    • Direct Attached Storage
    • Low Cost
    • Low Performance
  3. NAS
    • Network Attached Storage
    • Attaches over Network
    • Connect remotely
    • Protocols can be used
    • NFS, CIFS, HTTP, FTP
  4. SAN
    • Storage Area Network
    • Fibre Channel or iSCSI
    • Fibre is high cost/Hihg performance
    • iSCSI has lower costs/lower performance
    • Should be dedicated network
    • Mainly for large environments
  5. Disk Storage levels

    -Block
    Block level storage is teh reading and writing of data to teh hard drive in small peices called blocks, mainly used in SAN

    • Database
    • Exchange
  6. Disk Storage level

    File
    File level storage operates at a higher level and consolidates blocks and relates the file name, size and locations of the data on the block level storage

    • Mainly used in NAS
    • General Files
    • VMWare
  7. JBOD
    • Just a Bunch of Disks
    • Need Raid controller Card (external)
    • ex MD1200
  8. RBOD
    RAID Bunch of Disks

    • Requires connection to an HBA
    • ex MD3200
    • Built in RAID controller
  9. Media
    • Cables have different flavors
    • Speed vs Distance
    • only fit into certain devices
  10. How Many Parity Disks are used in RAID 5
    one?
  11. How many parity disks are used in RAID 6
    2
  12. RAID 0
    • Minimum number of Disks 2
    • Fault Toloerance None
    • Access Speed: Fast read and write
    • Implementation cost: Cheap
  13. RAID 1
    • Minimum number of Disks: 2
    • Fault Tolerance: 1 disk
    • Access Speed: Fast Read, slow Write
    • Implentation Cost: Expensive (Disks)
  14. RAID 5
    • Minmum Number of Disks: 3
    • Fault Tolerance: 1 Disk
    • Disk Pace needed for Fault Tolerance: 1 Disk
    • Access Speed:
    • RAID 5&6 are good due to spindle count and stripping but access times will fail and writes do slow down because of parity being written.
  15. RAID 6
    • Minimum number of disks: 4
    • Fault tolerance: 2 disks
    • Disk space used to maintain fault tolerance: 2 disks
    • Access speed:
    • RAID 5&6 are good due to spindle count and stripping but access times will fail and writes do slow down because of parity being written.
    • Implementations cost: Very Expensive (Controller)
  16. RAID 1+0
    • Minimum of Disks: 4
    • Fault Tolerance: 1 Disk
    • Disk space used to maintain fault Tolerance: 50%
    • Access Speed: Fast Read medium Write
    • Implementation cost: Expensive (disks)
  17. Replication
    To duplicate or copy data from one location to another
  18. Thin Provisioning
    Provides a method for optimizing Utilization of available storage
  19. PowerVault
    Currently Dells low level storage solution
  20. EQL
    Equallogic, Dells Mid Range storage solution
  21. Compelle
  22. 3 PAR
    HP Storage solution
  23. NetApp
    Dell competitor
  24. SAS
    • SAS disks have replaced SCSI
    • Standard in enterprise Grade Storage
  25. NL-SAS
    • Newcomer
    • Merging SATA Disk¬†with SAS Connector
    • SAS interface, Head, Media and rotational Speed
  26. SATA
    • Lowest on the spectrum
    • Common Tier, mass storage needs
  27. SSD
    • Solid State Drive
    • Fast
    • No moving parts
    • Expensive
    • SSD wear out over time
  28. Tiering
    • Speed and cost
    • Tier 1 - Top Level Access to be fastest best disks
    • Tier 2 - Mid level slower and cheaper
    • Tier 3 - Bottom level not regular access cheapest
  29. Array
    A group of Hard disk Drives
  30. Volume
    Is also often used to describe groups of several LUNs
  31. Hot Spare
    Disks in the Array waiting to be used in the event of an issue within the array
  32. Fiber
    Faster than iSCSI uses optical media
  33. Latency
    Response time

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