{"id":114783,"date":"2018-02-20T23:50:30","date_gmt":"2018-02-20T23:50:30","guid":{"rendered":"https:\/\/writemyessayfree.com\/hard-disk-capacity-calculations"},"modified":"2017-08-03T16:09:38","modified_gmt":"2017-08-03T16:09:38","slug":"hard-disk-capacity-calculations","status":"publish","type":"post","link":"https:\/\/www.benedictsol.com\/blogs\/hard-disk-capacity-calculations\/","title":{"rendered":"Hard Disk capacity calculations"},"content":{"rendered":"<div class=\"the_content_wrapper\">\n<p>Hard Disk capacity calculations<\/p>\n<p>1) Suppose you have a hard disk with 1600 tracks per surface, each track divided into 64 sectors, eight platters and a blocksize of 512 bytes (i.e., 1\u20442 kilobyte),<br \/> what is the total raw capacity of the disk drive?<\/p>\n<p>2) Once installed in a computer and made ready for use to hold files, the OS reports that a disk has 186 GB of available space. Yet, you know the drive has a raw<br \/> capacity of slightly more than 200 GB. Where did the 14 GB go?<\/p>\n<p>3) On a linux system with disk blocks of 1 KB and 32-bit block numbers, how many disk seeks are needed to read each of the following block numbers: 7, 49, 392, 67,<br \/> 72491, 3122 ?<\/p>\n<p>4) Suppose you need to add more disk capacity to a system. You consider a SLED: a 6 TB single dr ive for $220. What\u2019s the cost-per-byte of this dr ive? You also have<br \/> access to 10 1 TB dr ives at $45 each. What\u2019s the cost-per-bye of one of these disks? If you make a RAID 5 box out of the 1 TB dr ives, why do you choose to use seven<br \/> disks in order to have the full 6 TB capacity the SLED provides? What\u2019s one important feature the RAID 5 \u2018dive\u2019 provides that the SLED cannot?<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Hard Disk capacity calculations 1) Suppose you have a hard disk with 1600 tracks per surface, each track divided into 64 sectors, eight platters and a blocksize of 512 bytes (i.e., 1\u20442 kilobyte), what is the total raw capacity of <a href=\"https:\/\/www.benedictsol.com\/blogs\/hard-disk-capacity-calculations\/\" class=\"read-more\">Read More &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-114783","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts\/114783","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/comments?post=114783"}],"version-history":[{"count":0,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts\/114783\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/media?parent=114783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/categories?post=114783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/tags?post=114783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}