公开(公告)号：GB2531074A

公开(公告)日：2016-04-13

申请号：GB201418000

申请日：2014-10-10

Applicant: IBM

Inventor： ILIAS ILIADIS ,  JENS JELITTO ,  YUSIK KIM ,  SLAVISA SARAFIJANOVIC ,  VINODH VENKATESAN

IPC: G06F3/06 ,  G06F11/30

Abstract: Disclosed is a storage system 100 with a data storage device 200 including a number N of removable storage media 211 - 21N for storing data, with N > 2, and a number m of drives 221 - 22m, with m > 1. Each of the drives, drives one of the removable storage media when mounted to a drive. The storage system includes a server 300 coupled to the data storage device to service requests R from clients, and a controller 400 which controls the data storage device to adaptively un-mount the removable storage media based on monitored information I of the requests at the data storage device, states of the drives S1, and the states of the removable storage media S2. The monitoring information may include an arrival rate of requests, total size of the requests and/or the average size of the requests received. The controller may also use the number of storage media, the arrival rate distribution of the media and the performance characteristics of the drives, to base the un-mounting of the storage media.