Mass storage device and method for dynamically managing a mass storage device

A large-capacity storage and device technology, applied in the input/output process of data processing, electrical digital data processing, special data processing applications, etc., can solve inactivity, loss of physical storage device performance, logical volume size cannot be dynamically changed, etc. problem to achieve optimal data placement

Inactive Publication Date: 2006-06-28
IBM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The disadvantage of this prior art is that if the file system includes a large amount of frequently accessed active data, some of these data will also be migrated from the disk storage device to the tape storage device by the HSM. Fraction of data being migrated
Because the data is often used, it will lose the performance of the physical storage device because it is often exchanged between disk and tape
Another drawback of this prior art is that the size of the allocated file system's logical volume cannot be changed dynamically, because the HSM will put the active Data migration from active file system to tape
Also, the default sizes of different file systems are useless, since data contained in different file systems may be more or less active at different times
This results in an equivalent situation if other triggers than thresholds are used for data migration

Method used

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  • Mass storage device and method for dynamically managing a mass storage device

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Embodiment Construction

[0045] Such as figure 1 As shown, a single file server 1 can now manage multiple file systems 2, 2' residing in different logical volumes 3, 3' on a single physical storage device 5, eg ESS or SVC. Using a SAN, the storage device 5 can also be shared between different file servers 1, 1', so that a large number of file systems 2, 2', 2", 2''... reside on the same storage device 5.

[0046] figure 1 Two machines 1, 1' are shown each managing two file systems 2, 2' and 2", 2''. The file systems 2, 2', 2", 2'' are assigned to a specific logical volume 3 , 3′, 3″, 3, wherein all data 4, 4′, 4″, 4 stored in these file systems 2, 2′, 2″, 2 reside in the same storage device 5, Such as figure 2 shown. Similarly, more file systems 2 are managed on the same storage device 5 .

[0047] similar figure 2 As shown, all file systems 2, 2', 2", 2'' contain active data 6, 6', 6", 6'' (shown in dark gray) that are changed and accessed fairly frequently and referenced Other data 7, 7'...

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Abstract

The present invention relates to mass storage devices and methods for dynamically managing mass storage devices. The present invention describes a method for managing a mass storage device comprising at least one secondary storage device and at least one tertiary storage device connectable to said secondary storage device, wherein the secondary storage The device is partitioned into independent logical volumes, and the logical volumes are allocated to different file systems for storing data of different applications. Among them, the individual score of each data stored on the secondary storage device is calculated, and if the upper limit of the secondary storage device defined by the high threshold is exceeded, the data is exchanged to the tertiary storage device in order of the individual scores of the data until A lower bound on the amount of used capacity of a secondary storage device defined by a low threshold is reached, where logical volumes are resized dynamically, each logical volume being resized to be the same as still on the secondary storage device and belonging to that particular logical volume The data are directly proportional.

Description

technical field [0001] The invention relates to a method for managing a mass storage device according to claim 1, comprising at least one secondary storage device and at least one tertiary storage device connectable to said secondary storage device, wherein said The secondary storage device is partitioned into independent logical volumes, and these independent logical volumes are assigned to different file systems for storing data of different applications. Furthermore, the invention relates to a computer program product according to claim 12 and a mass storage device according to claim 13 . Background technique [0002] Today, Storage Resource Management SRM and Hierarchical Storage Management HSM are two application areas in which different types of software are used to manage the resources of mass storage devices. These resources include logical volumes and file systems assigned to the logical volumes. [0003] Logical volumes reside on physical storage devices. They a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/08G06F17/30
CPCG06F3/0608G06F3/0631G06F3/0649G06F3/0685G06F16/185G06F16/24561
Inventor 詹斯-彼得·阿克尔拜恩
Owner IBM CORP
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