{"id":111,"date":"2020-11-09T13:10:05","date_gmt":"2020-11-09T13:10:05","guid":{"rendered":"http:\/\/learnlearn.uk\/igcsecs\/?page_id=111"},"modified":"2023-06-03T23:44:34","modified_gmt":"2023-06-03T23:44:34","slug":"magnetic-optical-solid-state-storage","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/","title":{"rendered":"Magnetic, Optical &#038; Solid State Storage"},"content":{"rendered":"<div class=\"responsive-tabs\">\n<h2 class=\"tabtitle\">Magnetic Storage<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Magnetic Storage Devices<\/h3>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/ngP6nSt_yAE\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><a href=\"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/Magnetic-Storage-Devices-Revision-Sheet.docx\">Magnetic-Storage-Devices-Revision-Sheet<\/a><\/p>\n<div id=\"attachment_298\" style=\"width: 262px\" class=\"wp-caption alignright\"><img aria-describedby=\"caption-attachment-298\" decoding=\"async\" loading=\"lazy\" class=\"wp-image-298 size-full\" src=\"https:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/hdd.jpg?_t=1516282909\" alt=\"\" width=\"252\" height=\"200\" \/><p id=\"caption-attachment-298\" class=\"wp-caption-text\">Magnetic HDD With spinning platter in view<\/p><\/div>\n<p>These are the oldest of the commonly used storage devices, but are still the most widely used.<\/p>\n<ul>\n<li>Magnetic Hard Drives are used to store data and programs on desktops and laptops<\/li>\n<li>Magnetic tape drives are usually used for large server \/ systems backups.<\/li>\n<\/ul>\n<p><strong>Advantages<\/strong><\/p>\n<ul>\n<li>Cheap Storage per MB (especially tape drives!)<\/li>\n<li>Relatively quick read \/ write speeds.<\/li>\n<\/ul>\n<p><strong>Disadvantages<\/strong><\/p>\n<ul>\n<li>Easily broken if dropped<\/li>\n<li>Slow read \/write compared to new SSD drives.<\/li>\n<li>High energy uses as it uses moving parts (lower battery life on laptops)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=71_8NHHD8OI\">Further Watching\u00a0 &#8211; How do Magnetic Stripe Cards work?<\/a><\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Optical Storage<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Optical Storage Devices<img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-330 alignright\" src=\"https:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/cd-rom.jpg\" alt=\"\" width=\"225\" height=\"225\" \/><\/h3>\n<p><a href=\"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/Optical-Storage-Devices-Revision-Sheet.docx\">Optical-Storage-Devices-Revision-Sheet<\/a><\/p>\n<p>Optical Storages used to be incredibly popular up until the last couple of years where cloud storage and the rise of video and game streaming services have massively reduced their popularity.<\/p>\n<p>Types of optical storage devices:<\/p>\n<ul>\n<li>CD Drives\u00a0 (700MB)<\/li>\n<li>DVD Drives\u00a0 (4.7GB)<\/li>\n<li>BluRay Drives (50GB)<\/li>\n<\/ul>\n<p>Optical storage devices offer cheap and portable high capacity secondary storage. Far more portable than an internal hard-drive, which makes them good for small \/ medium size backups and great for sending through the post.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>How they work<\/strong><\/h3>\n<p>Optical storage devices work by firing a laser at the surface of a spinning disk. The disc is covered in a pattern of pits in the CD surface. As the laser hits the pits it is reflected and the pattern of pits it detected by a laser detector.<\/p>\n<p><iframe loading=\"lazy\" src=\"\/\/scratch.mit.edu\/projects\/embed\/61133374\/?autostart=false\" width=\"800\" height=\"600\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><br \/>\n<\/iframe><br \/>\n\n<\/div><h2 class=\"tabtitle\">Solid State Storage<\/h2>\n<div class=\"tabcontent\">\n<\/p>\n<h3>Solid State Storage Devices<\/h3>\n<div id=\"attachment_326\" style=\"width: 292px\" class=\"wp-caption alignright\"><img aria-describedby=\"caption-attachment-326\" decoding=\"async\" loading=\"lazy\" class=\"wp-image-326 size-full\" src=\"https:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/ssd.jpg\" alt=\"\" width=\"282\" height=\"179\" \/><p id=\"caption-attachment-326\" class=\"wp-caption-text\">SSD Drive &#8211; Expensive but fast<\/p><\/div>\n<p><a href=\"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/Solid-State-Devices-Revision-Sheet.docx\">Solid-State-Devices-Revision-Sheet<\/a><\/p>\n<p>Solid state devices are the newest form of storage to emerge. The technology is used in Hard Drives, SD Cards and USB sticks. Solid state storage devices work by storing data in flash chips electronically. They are still more expensive than traditional storage devices but the price per GB is falling all the time.<\/p>\n<p><strong>Advantages<\/strong><\/p>\n<ul>\n<li>Very fast read \/ write speeds.<\/li>\n<li>Shock resistant as there are no moving parts to break if knocked<\/li>\n<li>No moving parts so longer battery life ( great for laptops \/ tablets \/ smartphones)<\/li>\n<\/ul>\n<p><strong>Disadvantages<\/strong><\/p>\n<ul>\n<li>More expensive per GB of storage<\/li>\n<li>Limited life span, as each flash cell can only be written to a limited number of times.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-340 size-medium alignright\" src=\"https:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/USB_Stick-300x174.jpg\" alt=\"\" width=\"300\" height=\"174\" \/><\/p>\n<div id=\"attachment_339\" style=\"width: 205px\" class=\"wp-caption alignright\"><img aria-describedby=\"caption-attachment-339\" decoding=\"async\" loading=\"lazy\" class=\"wp-image-339 size-full\" src=\"https:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/sd-card.png?_t=1516617516\" alt=\"\" width=\"195\" height=\"259\" \/><p id=\"caption-attachment-339\" class=\"wp-caption-text\">Very portable and small &#8211; but needs a reader to use<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Characteristics<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Common Storage Device Comparisons<\/h3>\n<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<colgroup>\n<col width=\"155\" \/>\n<col width=\"122\" \/>\n<col width=\"122\" \/>\n<col width=\"122\" \/>\n<col width=\"122\" \/>\n<col width=\"122\" \/>\n<col width=\"122\" \/><\/colgroup>\n<tbody>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Device Type&quot;}\"><strong>Device Type<\/strong><\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Capacity&quot;}\"><strong>Capacity<\/strong><\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Speed&quot;}\"><strong>Speed<\/strong><\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Portability&quot;}\"><strong>Portability<\/strong><\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Durability&quot;}\"><strong>Durability<\/strong><\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Reliability&quot;}\"><strong>Reliability<\/strong><\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Cost&quot;}\"><strong>Cost<\/strong><\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Magnetic Hard Drive HDD&quot;}\">Magnetic Hard Drive HDD<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;High Capacity(2TB +)&quot;}\">High Capacity(2TB +)<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Relatively Slow Read \/ Write Speeds&quot;}\">Relatively Slow Read \/ Write Speeds<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Not very portable and quite heavy&quot;}\">Not very portable and quite heavy<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Long life span, but susceptible to damage \/ data corruption if dropped&quot;}\">Long life span, but susceptible to damage \/ data corruption if dropped<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very Reliable&quot;}\">Very Reliable<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Cheapest form of main secondary storage&quot;}\">Cheapest form of main secondary storage<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Solid State Hard Drive&quot;}\">Solid State Hard Drive<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Medium Capacity &lt;1TB&quot;}\">Medium Capacity &lt;1TB<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Exceptionally fast read \/ write speeds&quot;}\">Exceptionally fast read \/ write speeds<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;More portable than HDD but not as portable as other types, as usually inside the pc&quot;}\">More portable than HDD but not as portable as other types, as usually inside the pc<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;No moving parts, so very durable&quot;}\">No moving parts, so very durable<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Quite reliable, up to 5 years.&quot;}\">Quite reliable, up to 5 years.<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Twice the price of HDD Drives&quot;}\">Twice the price of HDD Drives<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;SD Card&quot;}\">SD Card<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Low \/ Medium Capacity &lt;256GB&quot;}\">Low \/ Medium Capacity &lt;256GB<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very fast read \/ write, as flash memory&quot;}\">Very fast read \/ write, as flash memory<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Extremely portable&quot;}\">Extremely portable<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Won't be damaged if dropped, but easy to lose and susceptible to water damage &quot;}\">Won&#8217;t be damaged if dropped, but easy to lose and susceptible to water damage<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Not very reliable, prone to stop working over time&quot;}\">Not very reliable, prone to stop working over time<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Quite high cost per GB&quot;}\">Quite high cost per GB<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Pen Drive&quot;}\">Pen Drive<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Low \/ Medium Capacity &lt;256GB&quot;}\">Low \/ Medium Capacity &lt;256GB<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very fast read \/ write, as flash memory&quot;}\">Very fast read \/ write, as flash memory<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Extremely portable&quot;}\">Extremely portable<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Won't be damaged if dropped, but easy to lose and susceptible to water damage &quot;}\">Won&#8217;t be damaged if dropped, but easy to lose and susceptible to water damage<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Not very reliable, prone to stop working over time&quot;}\">Not very reliable, prone to stop working over time<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Quite high cost per GB&quot;}\">Quite high cost per GB<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;CD (Optical Drive)&quot;}\">CD (Optical Drive)<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Low Capacity 700MB&quot;}\">Low Capacity 700MB<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very Slow Read \/ Write speed&quot;}\">Very Slow Read \/ Write speed<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;quite portable, cheap to mail, will work in many devices (PCs, Music Players, Car stereos)&quot;}\">quite portable, cheap to mail, will work in many devices (PCs, Music Players, Car stereos)<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Easy to scratch and data loss easy&quot;}\">Easy to scratch and data loss easy<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Not very reliable, prone to stop working over time&quot;}\">Not very reliable, prone to stop working over time<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very Low cost per unit(10p)&quot;}\">Very Low cost per unit(10p)<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;DVD&quot;}\">DVD<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Low Capacity 4.7GB&quot;}\">Low Capacity 4.7GB<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Quite Slow Read \/ Write Speed&quot;}\">Quite Slow Read \/ Write Speed<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;quite portable, cheap to mail&quot;}\">quite portable, cheap to mail<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Easy to scratch and data loss easy&quot;}\">Easy to scratch and data loss easy<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Not very reliable, prone to stop working over time&quot;}\">Not very reliable, prone to stop working over time<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very Low cost per unit (10p)&quot;}\">Very Low cost per unit (10p)<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Blu-ray&quot;}\">Blu-ray<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Medium Capacity 50GB+&quot;}\">Medium Capacity 50GB+<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Medium Read write speed&quot;}\">Medium Read write speed<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;quite portable, cheap to mail&quot;}\">quite portable, cheap to mail<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Easy to scratch and data loss easy&quot;}\">Easy to scratch and data loss easy<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Not very reliable, prone to stop working over time&quot;}\">Not very reliable, prone to stop working over time<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very Low cost per unitl (10p)&quot;}\">Very Low cost per unitl (10p)<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Magnetic Tape Drive&quot;}\">Magnetic Tape Drive<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Massive Capacity&quot;}\">Massive Capacity<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very Slow Read \/ Write speed. Sequential read \/ write only&quot;}\">Very Slow Read \/ Write speed. Sequential read \/ write only<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;quite portable, cheap to mail&quot;}\">quite portable, cheap to mail<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Generally long lasting&quot;}\">Generally long lasting<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Medium reliability over time&quot;}\">Medium reliability over time<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very, very low cost per TB&quot;}\">Very, very low cost per TB<\/td>\n<\/tr>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Cloud Storage&quot;}\">Cloud Storage<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Effectively infinite storage&quot;}\">Effectively infinite storage<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Depends on internet speed, but quite slow&quot;}\">Depends on internet speed, but quite slow<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Can access anywhere there is access to internet&quot;}\">Can access anywhere there is access to internet<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Very durable, due to backups and offsite storage.&quot;}\">Very durable, due to backups and offsite storage.<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;As reliable as internet connection.&quot;}\">As reliable as internet connection.<\/td>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Cheap per GB, but may require monthly subscription&quot;}\">Cheap per GB, but may require monthly subscription<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n<\/div><h2 class=\"tabtitle\">Resources<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Resources<\/h3>\n<p><a href=\"https:\/\/www.aicurriculum.co.uk\/resources\/f36f67b0-6d26-4eb6-b56d-c7752367f744\">AI Assisted Teaching &amp; Learning Resources<\/a><\/p>\n<p><a href=\"https:\/\/docs.google.com\/document\/d\/1esS-4YznPvEQqOfiEHef58tN7pMm071q-0Q1BVP6Ctk\/edit?usp=sharing\">Secondary Storage Devices Worksheet<\/a><\/p>\n<p><a href=\"https:\/\/docs.google.com\/document\/d\/1oGvdYIFnYHOYlEGJmXPwX2gEDPvWY6ietYoRkJm6DkM\/edit?usp=sharing\">Secondary Storage Devices Worksheet Version 2<\/a><\/p>\n<p><a href=\"https:\/\/play.kahoot.it\/#\/k\/364718a9-456d-4f64-aa28-db4d052acf5e\">Secondary Storage Devices Kahoot<\/a><\/p>\n<p><a href=\"https:\/\/play.kahoot.it\/#\/k\/598aac4a-5c5e-43c6-a724-fc8030f7f09c\">Secondary Storage Devices Kahoot 2<\/a><\/p>\n<h3>Past Paper Exam Questions<\/h3>\n<p><a href=\"https:\/\/pastpapers.papacambridge.com\/viewer\/caie\/cambridge-upper-secondary-igcse-computer-science-0478-2016-jun-0478-s16-qp-11-pdf\">0478\/11 Paper 1 Theory May\/June 2016\u00a0\u00a0<\/a>Qn 11<\/p>\n<p><a href=\"https:\/\/pastpapers.papacambridge.com\/viewer\/caie\/cambridge-upper-secondary-igcse-computer-science-0478-2016-jun-0478-s16-qp-12-pdf\">0478\/12 &#8211; Paper 1 Theory May\/June 2016 Qn 10<\/a><\/p>\n<p><a href=\"https:\/\/pastpapers.papacambridge.com\/viewer\/caie\/cambridge-upper-secondary-igcse-computer-science-0478-2016-jun-0478-s16-qp-13-pdf\">0478\/13 &#8211; Paper 1 Theory May\/June 2016 Qn11<\/a><\/p>\n<p><a href=\"https:\/\/pastpapers.papacambridge.com\/viewer\/caie\/cambridge-upper-secondary-igcse-computer-science-0478-2017-nov-0478-w17-qp-11-pdf\">0478\/11 &#8211; Paper 1 Theory October\/November 2017 qn 9a (CDs)<\/a><\/p>\n<p><a href=\"https:\/\/pastpapers.papacambridge.com\/viewer\/caie\/cambridge-upper-secondary-igcse-computer-science-0478-2018-oct-nov-0478-w18-qp-11-pdf\">0478\/11 Paper 1 Theory October\/November 2018 Qn 5c<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Magnetic Storage Devices Magnetic-Storage-Devices-Revision-Sheet These are the oldest of the commonly used storage devices, but are still the most widely used. Magnetic Hard Drives are used to store data and programs on desktops and laptops Magnetic tape drives are usually used for large server \/ systems backups. Advantages Cheap Storage per MB (especially tape drives!)&hellip;&nbsp;<a href=\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Magnetic, Optical &#038; Solid State Storage<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"on","neve_meta_content_width":83,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Magnetic, Optical &#038; Solid State Storage | IGCSE Computer Science | Learnlearn.uk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Magnetic, Optical &#038; Solid State Storage | IGCSE Computer Science | Learnlearn.uk\" \/>\n<meta property=\"og:description\" content=\"Magnetic Storage Devices Magnetic-Storage-Devices-Revision-Sheet These are the oldest of the commonly used storage devices, but are still the most widely used. Magnetic Hard Drives are used to store data and programs on desktops and laptops Magnetic tape drives are usually used for large server \/ systems backups. Advantages Cheap Storage per MB (especially tape drives!)&hellip;&nbsp;Read More &raquo;Magnetic, Optical &#038; Solid State Storage\" \/>\n<meta property=\"og:url\" content=\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/\" \/>\n<meta property=\"og:site_name\" content=\"IGCSE Computer Science\" \/>\n<meta property=\"article:modified_time\" content=\"2023-06-03T23:44:34+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/hdd.jpg?_t=1516282909\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/\",\"name\":\"Magnetic, Optical &#038; Solid State Storage | IGCSE Computer Science | Learnlearn.uk\",\"isPartOf\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#website\"},\"datePublished\":\"2020-11-09T13:10:05+00:00\",\"dateModified\":\"2023-06-03T23:44:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"IGCSE Computer Science Course\",\"item\":\"https:\/\/learnlearn.uk\/igcsecs\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Magnetic, Optical &#038; Solid State Storage\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#website\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/\",\"name\":\"IGCSE Computer Science\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/learnlearn.uk\/igcsecs\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#organization\",\"name\":\"IGCSE Computer Science\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2020\/08\/LearnLearnLogowhitenew.png\",\"contentUrl\":\"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2020\/08\/LearnLearnLogowhitenew.png\",\"width\":710,\"height\":98,\"caption\":\"IGCSE Computer Science\"},\"image\":{\"@id\":\"https:\/\/learnlearn.uk\/igcsecs\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Magnetic, Optical &#038; Solid State Storage | IGCSE Computer Science | Learnlearn.uk","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/","og_locale":"en_GB","og_type":"article","og_title":"Magnetic, Optical &#038; Solid State Storage | IGCSE Computer Science | Learnlearn.uk","og_description":"Magnetic Storage Devices Magnetic-Storage-Devices-Revision-Sheet These are the oldest of the commonly used storage devices, but are still the most widely used. Magnetic Hard Drives are used to store data and programs on desktops and laptops Magnetic tape drives are usually used for large server \/ systems backups. Advantages Cheap Storage per MB (especially tape drives!)&hellip;&nbsp;Read More &raquo;Magnetic, Optical &#038; Solid State Storage","og_url":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/","og_site_name":"IGCSE Computer Science","article_modified_time":"2023-06-03T23:44:34+00:00","og_image":[{"url":"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/hdd.jpg?_t=1516282909"}],"twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/","url":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/","name":"Magnetic, Optical &#038; Solid State Storage | IGCSE Computer Science | Learnlearn.uk","isPartOf":{"@id":"https:\/\/learnlearn.uk\/igcsecs\/#website"},"datePublished":"2020-11-09T13:10:05+00:00","dateModified":"2023-06-03T23:44:34+00:00","breadcrumb":{"@id":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/learnlearn.uk\/igcsecs\/magnetic-optical-solid-state-storage\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"IGCSE Computer Science Course","item":"https:\/\/learnlearn.uk\/igcsecs\/"},{"@type":"ListItem","position":2,"name":"Magnetic, Optical &#038; Solid State Storage"}]},{"@type":"WebSite","@id":"https:\/\/learnlearn.uk\/igcsecs\/#website","url":"https:\/\/learnlearn.uk\/igcsecs\/","name":"IGCSE Computer Science","description":"","publisher":{"@id":"https:\/\/learnlearn.uk\/igcsecs\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/learnlearn.uk\/igcsecs\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/learnlearn.uk\/igcsecs\/#organization","name":"IGCSE Computer Science","url":"https:\/\/learnlearn.uk\/igcsecs\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/learnlearn.uk\/igcsecs\/#\/schema\/logo\/image\/","url":"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2020\/08\/LearnLearnLogowhitenew.png","contentUrl":"https:\/\/learnlearn.uk\/igcsecs\/wp-content\/uploads\/sites\/23\/2020\/08\/LearnLearnLogowhitenew.png","width":710,"height":98,"caption":"IGCSE Computer Science"},"image":{"@id":"https:\/\/learnlearn.uk\/igcsecs\/#\/schema\/logo\/image\/"}}]}},"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"learnlearnadmin","author_link":"https:\/\/learnlearn.uk\/igcsecs\/author\/learnlearnadmin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Magnetic Storage Devices Magnetic-Storage-Devices-Revision-Sheet These are the oldest of the commonly used storage devices, but are still the most widely used. Magnetic Hard Drives are used to store data and programs on desktops and laptops Magnetic tape drives are usually used for large server \/ systems backups. Advantages Cheap Storage per MB (especially tape drives!)&hellip;&nbsp;Read&hellip;","_links":{"self":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages\/111"}],"collection":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/comments?post=111"}],"version-history":[{"count":15,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages\/111\/revisions"}],"predecessor-version":[{"id":1013,"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/pages\/111\/revisions\/1013"}],"wp:attachment":[{"href":"https:\/\/learnlearn.uk\/igcsecs\/wp-json\/wp\/v2\/media?parent=111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}