Shingled magnetic recording (SMR) drives provide high data density at low cost. However, they have very different characteristics than standard drives. In this talk John Dickinson and Carlos Cavanna give background information on SMR drives and talk about performance of both types, device-managed (use firmware to hide differing characteristics) and host-managed (rely on the application to manage the differing characteristics) SMR drives under various simulated Swift workloads modeled after public cloud access.

Read the article on SMR drives here: [ Ссылка ]

01:27 What is SMR?
06:25 Drive Media Cache
10:43 Sustainable Daily Write Rate
19:17 SMR Swift Simulator
30:34 Good SMR Use Cases

There's also a video about HAMR, a 2020 introduced new technology, which allows even higher storage density. [ Ссылка ]

Micropolis Users Group: [ Ссылка ]

Tags: #storage #datastorage #technology #computerscience #harddisk #storage #micropolis

License: CC-BY: Talk by John Dickinson [SwiftStack] & Carlos Cavanna [IBM] @ Tokyo Openstack Summit in 2015, openinfra.dev

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