External Computer Storage


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Why use external computer storage?
Data portability
Fast backups
Extend computer storage easily
Share data on a network
Hold multimedia library
Hold whole operating systems as virtual machines
Cheaper than a new server

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External Computer Storage

  1. 1. External Computer Storage New Products, New Possibilities By Matthew Bulat http://www.matthewb.id.au/
  2. 2. Why External Storage? <ul><li>Data portability </li></ul><ul><li>Backup computers fast </li></ul><ul><li>Backup automatically </li></ul><ul><li>Extend PC storage easily </li></ul><ul><li>Share data in network </li></ul><ul><li>Hold media library </li></ul><ul><li>Speed up Vista </li></ul><ul><li>Hold bootable OS </li></ul><ul><li>Hold personal apps menu </li></ul><ul><li>Cheaper than another server </li></ul>
  3. 3. External Storage versus New Server <ul><li>External storage is quicker to set up </li></ul><ul><li>External storage is cheaper per GB </li></ul><ul><li>Less licensing costs </li></ul><ul><li>More skills required to maintain server/s </li></ul><ul><li>Backup of multiple server storage is complex </li></ul><ul><li>External storage uses less power and requires less cooling </li></ul><ul><li>Storage of > 1 TB difficult within a server </li></ul>
  4. 4. Big Storage Projects <ul><li>Business Intelligence data collection & analysis </li></ul><ul><li>Tougher data collection rules (SOX) </li></ul><ul><li>Call Recording all calls with matching database </li></ul><ul><li>Paper scanning for archive with matching database </li></ul><ul><li>Growth in email storage </li></ul><ul><li>Photo / Video / IPTV / music collections </li></ul><ul><li>Radio and television broadcasting </li></ul>
  5. 5. Types of External Storage <ul><li>USB flash drive </li></ul><ul><li>eSATA storage </li></ul><ul><li>USB / Firewire hard drive </li></ul><ul><li>Network Attached Storage (NAS) </li></ul><ul><li>Network Attached Storage for Media </li></ul><ul><li>Online Internet based external storage </li></ul><ul><li>Storage Area Network (SAN) </li></ul>
  6. 6. USB memory stick <ul><li>1 GB to 64 GB </li></ul><ul><li>4 GB < $25 </li></ul><ul><li>Up to ~ 20 MB/sec transfer speed </li></ul>
  7. 7. USB memory stick uses <ul><li>Move files from school/work to home easily </li></ul><ul><li>Create bootable USB Linux operating system </li></ul><ul><li>Leave no trace on host computer </li></ul><ul><li>U3 standard allows adding apps to USB drives www.u3.com </li></ul>
  8. 9. ReadyBoost for Vista <ul><li>Up to 4GB of USB 2.0 flash drive used for cache </li></ul><ul><li>Quicker than hard drive for random reading </li></ul><ul><li>Uses less power than a hard drive </li></ul><ul><li>Best on computer with low RAM memory </li></ul><ul><li>Not all USB drives are compatible </li></ul>
  9. 10. eSATA <ul><li>Allows 300MB/sec speed transfer (faster than drive) </li></ul><ul><li>Faster than USB2 and Firewire 800 </li></ul><ul><li>Use conventional SATA drives up to 2 metres from PC </li></ul><ul><li>Connectors available on new motherboards </li></ul>
  10. 12. USB / Firewire drives <ul><li>They can connect to most computers </li></ul><ul><li>Up to 2 terabytes in one external enclosure </li></ul><ul><li>2.5 inch drives can get power from PC </li></ul><ul><li>Some drives will automatically start with the PC </li></ul><ul><li>One of the simplest backup options for 1 PC </li></ul><ul><li>These can extend the limited storage of laptops </li></ul>
  11. 13. Firewire800(2)/Firewire400(1)/USB2(3) <ul><li>1 terabyte of storage in a 44 x 173 x 270 mm case </li></ul><ul><li>Street price ~ $250 </li></ul><ul><li>Triple interface will work with Windows, Mac and Linux PC </li></ul>
  12. 14. Vista Business Backup Options <ul><li>Can backup whole PC </li></ul><ul><li>Can have automatic backups of files and changes </li></ul><ul><li>Can restore whole PC files to new PC if required </li></ul>
  13. 15. Network Attached Storage <ul><li>Allows multiple computer to share storage over the network </li></ul><ul><li>Connection interface is usually 100/1000 Mbps Ethernet </li></ul><ul><li>User accounts and permissions can be set </li></ul><ul><li>Often has File Transfer Protocol abilities </li></ul><ul><li>RAID configurations are possible </li></ul><ul><li>Remote access to files over Internet possible </li></ul><ul><li>Enclosures can be bought separately from hard drives </li></ul><ul><li>Very cheap compared to a File Server </li></ul>
  14. 16. Sample of NAS form factors 1TB 4TB 750 GB with Internet remote access 200 Watts 25 users at once
  15. 17. NAS Internet Access <ul><li>Users accounts are created and stored by a provider such as www.mionet.com </li></ul><ul><li>Users authenticate via provider to access NAS </li></ul><ul><li>NAS and provider communicate as required </li></ul><ul><li>Users can be read only or read/write or private </li></ul><ul><li>Computers using NAS require remote access software </li></ul><ul><li>All data between NAS and user is 256 bit encrypted </li></ul>
  16. 18. Business NAS Features <ul><li>Copy files from file server to NAS including permissions </li></ul><ul><li>NAS can operate as Print Server for USB printers </li></ul><ul><li>Can connect to USB tape drives </li></ul><ul><li>Work with Microsoft Active Directory or UNIX Network Information Service </li></ul><ul><li>Capacity can be expanded without interruptions </li></ul><ul><li>Automatic synchronising between server/s & NAS </li></ul><ul><li>Low power consumption compared to a server </li></ul>
  17. 19. NAS cost sample <ul><li>1 TB NAS with remote Internet access ~$400 </li></ul><ul><li>2 TB NAS with remote Internet access ~$750 </li></ul><ul><li>1 TB NAS for business (up to 75 users) ~ $1600 </li></ul><ul><li>3 TB NAS for business (up to 125 users) ~ $3200 </li></ul>
  18. 20. NAS for media <ul><li>Similar to NAS but with added audio visual connections </li></ul><ul><li>Universal Plug and Play (UPnP) standard allows easy sharing of media files on a network </li></ul>
  19. 21. Online Storage Options <ul><li>Online email with 2 GB of storage E.G. gmail </li></ul><ul><li>Online free storage up to 2 GB with incremental encrypted backups (automatic/manual) E.g. www.mozy.com </li></ul><ul><li>Online unlimited storage for ~ $5 US/month </li></ul><ul><li>Online storage with automatic backup of selected folders (user files only) E.g. www.carbonite.com $50/year/PC </li></ul>
  20. 22. Storage Area Network <ul><li>Single storage unit usually supporting multiple servers </li></ul><ul><li>Each server has a proportion of the SAN they control </li></ul><ul><li>Connections of 1, 2, 4 G bits/second possible using fibre optics </li></ul><ul><li>Works well with Virtual Machines storage </li></ul><ul><li>Models available over 250 TB </li></ul><ul><li>Storage volumes can be expanded later by segments </li></ul>
  21. 23. SAN wiring <ul><li>Fibre channel card in each server which can work in redundant pairs </li></ul><ul><li>Fibre optic connections </li></ul><ul><li>Full bandwidth fibre switch </li></ul>
  22. 24. SAN sample <ul><li>Disk enclosure holds 15 drives </li></ul><ul><li>Up to 7 enclosures </li></ul><ul><li>4 to 120 hard drives </li></ul><ul><li>SAS or SATA drives </li></ul><ul><li>500 GB SATA drives </li></ul><ul><li>4 x 4Gbps fibre ports </li></ul><ul><li>400 MB/sec transfer </li></ul>
  23. 25. SAN possibilities <ul><li>8 CPU server </li></ul><ul><li>48 GB RAM </li></ul><ul><li>12 Virtual Machines </li></ul><ul><li>700 Watts </li></ul><ul><li>SAN with 7.5 TB </li></ul><ul><li>840 Watts </li></ul><ul><li>220 mm rack space </li></ul><ul><li>1540 Watts total </li></ul><ul><li>~ $87k in hardware </li></ul>