Peralatan Penyimpan (Secondary Storage)

Presentasi berjudul: "Peralatan Penyimpan (Secondary Storage)"— Transcript presentasi:

1 Peralatan Penyimpan (Secondary Storage)

2 Pengertian Storage : tempat penyimpanan Secondary Storage
Storage Media

3 Tujuan Menyimpan data dan program :
Permanen, tidak tergantung pada catu daya Backup, cadangan, keamanan Distribusi, memindahkan

4 Representasi Data Standard representasi: ASCII EBCDIC UNICODE

5 ASCII

6 Representasi biner Biner: data disimpan sebagai state ON = 1 OFF = 0

7 Standard Jumlah kode ASCII = American Standard Code for Information Interchange; ASCII-8 : 8 bit = 256 chars (0-255) EBCDIC = Extended Binary Coded Decimal Interchange Code; 256 chars UNICODE; 65536 Jika 1 huruf diwakili 1 char, dan 1 char ASCII-8 memerlukan tempat penyimpanan 8 bit (=1 byte), maka berapakah tempat untuk menyimpan “TI AKAKOM” ?

8 Satuan bites? 1 Byte = 8 bit 1 Kilobyte (KB) = 1024 Byte
1 Megabyte (MB)=1024 KB 1 Gigabyte (GB) = 1024 MB 1 Terabyte (TB) = 1024 GB bites? 1 MegaByte = 1,024 x 1,024 Bytes 1 MegaByte = 1,048,576 Bytes Kb = Kilobits KB = KiloBytes

9 Jenis Media penyimpanan: Magnetic Optical disk
(Removable) Solid-state Storage Device

10 Magnetic Magnetic Tape Magnetic Disk
Sequential Access Storage Device (SASD) Magnetic Disk Direct Access Storage Device (DASD)

11 Magnetic Tape Sequential Access Storage Device (SASD)
Makin jarang digunakan, tapi masih ada dipakai untuk backup

12 Magnetic Disk Floppy disk (diskette) Hard disk

13 Magnetic Disk: diskette
Bahan Bagian Track Sector

14 Floppy Disk (1) Ukuran

15 Floppy Disk (2) Formatting Kepadatan rekam Sisi rekam Soft-sector
Hard-sector Kepadatan rekam Single Density Double Density Quad Density High Density Sisi rekam Single Side Double Side

16 Floppy Disk (3) Cluster : satu blok data
Seandainya 1 cluster = 4 KB, maka File 3 KB memerlukan 1 cluster (4 KB) File 5 KB memerlukan 2 cluster (8 KB) Standard: FAT16 (DOS, Win31, Win95) = 32 KB FAT32 (Win98, XP) = 4 KB

17 Floppy Disk (3a) Diketahui disket, free space 100 KB
Seandainya 1 cluster = 4 KB Disimpan file ukuran 5 KB Free space saat ini menjadi: 92 KB

18 Floppy Disk (4) High-capacity floppy disk Zipdisk (Iomega)
Superdisk (Imation) HiFD disk (Sony)

19 Hard Disk (1)

20 Hard Disk (2) Seperti floppy

21 Hard Disk (3) Seperti floppy, bahan logam

22 Hard Disk (4) Seperti floppy, Beberapa piringan, cylinder

23 Hard disk (5) Speed: rotations per minute (rpm)
Capacity: Giga Byte (GB) Transfer rate: Mega bit per second (Mbps) Controller: IDE, ATA, EIDE, SATA ...

24 Hard disk (6) : varian Removable hard disk
Redundant Array of Inexpensive Disks (RAID) Small Computer System Interface (SCSI)

25 Hard disk, removable bracket USB v1.1 data transfer 12Mbits/sec.
Compatible with almost every 2,5" hdd. Hot swappable function. Included Win98/98se driver. Works without driver direct with Win ME/2000/XP, linux.

26 Hard Disk : raid 5 High capacity Mirroring Fault tolerant Stripping

27 Optical Disk

28 Optical Disk ROM : Read Only Memory WORM : Write Once, Read Many
CD-Recordable (CDR) Menulis CD dengan cara membakar (burn) permukaan piringan WMRM : Write Many Read Many ReWrite CD (CDRW)

29 Optical Disk CD (Compact Disk) :
CD-ROM CD-R CD-RW mini-CD DVD (Digital Video Disk, Digital Versatile Disk) : DVD-ROM DVD-R DVD-RAM

30 CD Format: CD-Audio, CD-ROM (ISO), VCD, SVCD, CD-I, .. Kapasitas:
Mini CD: 200 MB CD : 650 – 700 MB DVD : 4.7 GB – 17 GB Transfer rate: CD drive : 1x = 150 KBps DVD drive: 1x = 1.32 MBps

31 Fluorescent Multilayer Disk
Capacity : 20 GB – 140 GB Transfer rate : 1 GBps