{"id":582508,"date":"2010-05-28T02:16:52","date_gmt":"2010-05-28T06:16:52","guid":{"rendered":"http:\/\/davidkirkpatrick.wordpress.com\/?p=7534"},"modified":"2010-05-28T02:16:52","modified_gmt":"2010-05-28T06:16:52","slug":"seagate%e2%80%99s-hybrid-hard-drive","status":"publish","type":"post","link":"https:\/\/mereja.media\/index\/582508","title":{"rendered":"Seagate\u2019s hybrid hard drive"},"content":{"rendered":"

Combines a standard spinning platter drive (HDD) in 250, 350 or 500 gigabyte versions with four gigs of single-level cell (read: robust) Flash memor<\/a>y. Right now these are just about doubling the cost of standard drives with similar capacity.<\/p>\n

\n

The result is a combined drive that approaches the performance of solid state drives, but at a fraction of the price. According to\u00a0Seagate’s own tests<\/a>, the Momentus XT is 80% faster than a traditional notebook hard drive, and 20% faster than an ultra high-performance 10,000 RPM HDD.<\/p>\n

The speed boost is due almost entirely to the drive’s Adaptive Memory algorithm, which learns which applications and files a user accesses most, and dumps those in the 4 GB of flash memory. Flash has\u00a0150 times the access speed of a traditional hard drive<\/a>, but only 2 times the read\/write bandwidth.<\/p>\n

The technique of balancing a cache of expensive flash memory, which is great at randomly accessing many small files, with a large hard drive, which is many times cheaper per gigabyte and is good at reading and writing large files, mirrors a similar approach currently being explored in the data center.<\/p>\n

\"\"<\/p>\n

Seagate’s hybrid drive. Credit: Seagate.<\/p>\n<\/blockquote>\n

Here are Amazon links to the 250 GB version<\/a>\"\", the\u00a0320 GB version<\/a>\"\" and the 500 GB version<\/a>\"\" of the Seagate Momentus XT.<\/p>\n

\"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/a> \"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Combines a standard spinning platter drive (HDD) in 250, 350 or 500 gigabyte versions with four gigs of single-level cell (read: robust) Flash memory. Right now these are just about doubling the cost of standard drives with similar capacity. The result is a combined drive that approaches the performance of solid state drives, but at […]<\/p>\n","protected":false},"author":4050,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-582508","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/582508","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/users\/4050"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/comments?post=582508"}],"version-history":[{"count":0,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/582508\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/media?parent=582508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/categories?post=582508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/tags?post=582508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}