1 / 20

Data Storage Solutions

Data Storage Solutions. Module 1.2. Data Storage Solutions. Upon completion of this module, you will be able to: List the common storage media and solutions. Describe the three common storage environments. Lesson: Storage Solution Alternatives.

mimis
Download Presentation

Data Storage Solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Data Storage Solutions Module 1.2

  2. Data Storage Solutions Upon completion of this module, you will be able to: • List the common storage media and solutions. • Describe the three common storage environments. Data Storage Solutions

  3. Lesson: Storage Solution Alternatives Upon completion of this lesson, you will be able to: • Describe the different media and solutions available to address data storage needs of a business. • Describe the role of each solution in the overall data storage needs. • Describe the advantages of disk arrays. Data Storage Solutions

  4. Common Data Storage Media • Tape Library: A collection of tape drives and tapes • Jukeboxes: A collection of optical disks and drives • Disk Arrays: A collection hard disks • Each solution addresses specific needs for data storage and management. • Tape Library – Backup/Restore; Archival of data • Jukeboxes – Typically to store non-changing content over long periods of time • Disk Arrays – To store data that has to be immediately accessible and on-line Data Storage Solutions

  5. Tape Storage Systems • Tape based storage is relatively inexpensive, compared to disk arrays. • They served as primary storage solutions in the early days. • Tape drives use Read/Write heads to record bits of data onto magnetic material on the tape surface. • This technology continues to evolve, providing higher storage capacity, greater reliability, and improved performance. Data Storage Solutions

  6. Storing Data on Tape • Data is recorded sequentially from the beginning to end, one byte after another. • Because data is stored linearly along the length of the tape, random access to specific bits of data is slow and time consuming. This severely limits tape as a medium for real-time, rapid access to data. • Tapes cannot be shared among multiple users or applications. Data Storage Solutions

  7. Optical Data Storage • Popular in small, single-user computing environments. • Frequently used by individuals to store and share data, or as backup solution. • Also used as distribution medium for applications, or as a means of transferring small amounts of data from one self-contained system to another. Data Storage Solutions

  8. Disk Based Storage From a historical perspective, we will explore the following disk based storage solutions: • DASD: Direct Access Storage Device • JBOD: “Just a Bunch Of Disks” • Disk Arrays • “Intelligent” Disk Arrays Data Storage Solutions

  9. Disk Mainframe Types of Disk Systems: DASD • Introduced by IBM in 1956. • The ‘oldest’ of the techniques for accessing disks from a host computer. • Disks are accessed directly by a single host, historically a mainframe system. Data Storage Solutions

  10. Host Disk Disk Disk Disk Disk Types of Disk Systems: JBOD • Multiple physical disks in an external cabinet. • Array connects to a single server only. • Provides higher storage capacity with increased number of drives. • Data not protected by JBOD Array Data Storage Solutions

  11. Types of Disk Systems: Disk Arrays • Array controllers for optimized I/O operations and RAID calculations. • Higher speed interconnects between drives than JBODs. • Multiple host I/O channels. • Can be partitioned to allow each host to access its own set of drives. Host B Host C Host A Disk ArrayController Disk 1 Disk 2 Disk 3 Disk 4 Disk 5 Host A Host B Host C Data Storage Solutions

  12. Types of Disk Systems: “Intelligent” Disk Arrays • Highly optimized for I/O processing. • Cache for improving I/O performance. • Operating environments provide: • Intelligence for managing Cache, • Array resource allocation, • Host access to Array resources, • Connectivity for heterogeneous Hosts Host B Host C Host A Disk ArrayController Disk 1 Disk 2 Disk 3 Disk 4 Disk 5 Data Storage Solutions

  13. Lesson: Summary Topics covered in this lesson included: • Tape • Optical • Disks • DASD • JBOD • Disk Arrays • Intelligent Disk Arrays Data Storage Solutions

  14. Lesson: Storage Environment Upon completion of this lesson, you will be able to: • Describe Direct Attached Storage (DAS) features. • Describe Storage Area Network (SAN) features. • Describe Network Attached Storage (NAS) features. Data Storage Solutions

  15. Direct Attached Storage – DAS Server AApplication A Client 1 Disks for Server A Local Area Network Disks for Server B Client 2 Server BApplication B Disks for Server C Client 3 Server CApplication C Data Storage Solutions

  16. Network Attached Storage – NAS Server AFile System A Client 1 NAS Device AFile System A Disks for File System A Local Area Network Internal/External connectivityto disks or arrays Client 2 NAS Device BFile System B Disks for File System B Client 3 Server BFile System B Data Storage Solutions

  17. Storage Area Network – SAN Server AApplication A Client 1 Disks for Server A SAN Local Area Network Disks for Server B Client 2 Server BApplication B Disks for Server C Client 3 Disk Array Server CApplication C Data Storage Solutions

  18. Lesson: Summary Topics covered in this lesson included: • Direct Attached Storage (DAS) features. • Network Attached Storage (NAS) features. • Storage Area Network (SAN) features. Data Storage Solutions

  19. Module Summary Key points covered in this module: • The three types of data storage media. • The three storage environments. Data Storage Solutions

  20. Check Your Knowledge • What are the three most common storage media? • What are the three types of disk-based solutions? • What are the advantages of a disk-based storage solution? • What are the three storage environments? Data Storage Solutions

More Related