摘要:
This invention enables resources included in a storage system to be effectively used. In a storage system 1 including a host computer 3, a first storage apparatus 10 that receives a data I/O request from the host computer 3, the second storage apparatus 10, and including a function of external attachment processing for managing the entity of a first logical volume of the first storage apparatus 10 in a second logical volume of the second storage apparatus 10, when a problem occurs in performance of the first storage apparatus 10, the external attachment processing is released, while external attachment release processing is performed in which path for accessing from the host computer 3 the second logical volume is switched to allow direct access from the host computer 3 to the second logical volume. When the problem in performance of the first storage apparatus 10 is solved, path switching is performed again to resume the external attachment processing.
摘要:
A management server and a data migration method shorten a data backup processing time and improve the efficiency of data duplicate removal in a storage apparatus. The management server includes a backup capacity calculation unit for calculating, based on duplicate information of data stored in a plurality of storage apparatuses, a backup capacity of the data if duplicate data is removed. The management server includes a migration source data determination unit for determining, based on the calculated backup capacity, data which is a target for migration to another storage apparatus among data stored in one of the storage apparatuses. The management server further includes a migration destination storage apparatus determination unit for determining, based on duplicate information of the migration target data and data of a storage apparatus which is a migration destination for the data, a migration destination storage apparatus for the data.
摘要:
The data backup processing time is shortened by improving the efficiency of data duplicate removal in the storage apparatus.A management server comprises a backup capacity calculation unit for calculating, on the basis of duplicate information on data stored in storage apparatuses, the backup capacity of the data if the duplicate data is removed, a migration source data determination unit for determining, on the basis of the data backup capacity calculated by the backup capacity calculation unit, data which is a target for migration to another storage apparatus among data stored in one storage apparatus, and a migration destination storage apparatus determination unit for determining, on the basis of data duplicate information on the migration target data and data of the other storage apparatus which is a migration destination for the data, the migration destination storage apparatus for the data.
摘要:
A storage tiered that satisfies desired performance is configured by recognizing the type and capacity of storage media of a storage apparatus, which are held by a user, and using the storage media.When adding a specified area of storage media to a storage tiered in response to a request from a host computer, a management computer: obtains storage media information, including I/O frequency of a data storage area of a volume(s) as well as performance information and structure information of the storage media, from the storage apparatus; identifies one or more storage media, which have not been allocated to any of the volumes with the I/O performance in excess of the I/O frequency, on the basis of the structure information of the storage media so that the data storage area of the volume(s), to which a specified storage in the storage tiered is allocated, would achieve a specified I/O performance target; and issues an instruction to the storage apparatus to create a storage tiered by using the identified storage media.
摘要:
An object of the present invention is to allocate a volume to an appropriate tier in a pool in accordance with the performance of the volume. Multiple tiers 1K are created in a pool 1B. A pool volume that matches the performance required by a tier is allocated to each tier. An information acquisition part 1D acquires information related to respective storage apparatuses 1, 2, and information related to the performance of each volume. A tier control part 1E allocates a pool volume to any tier of the respective tiers, based on the performance information.
摘要:
A storage cluster including a first storage apparatus and a second storage apparatus is defined. Communication between the first storage apparatus and the second storage apparatus uses a first network and an access request from a host computer uses a second network. Each of the first and second storage apparatuses defines internal LUs by using storage devices included in that storage apparatus. The first storage apparatus defines other internal LUs by using internal LUs of the second storage apparatus and the second storage apparatus defines other internal LUs by using internal LUs of the first storage apparatus.
摘要:
To provide a storage management device capable of performing restore at a high speed. In the storage management device that manages backup and restore of data stored in a storage device, a temporary restored image is created by applying each required delta image to the full backup image, a reverse delta image before the application of the applied delta image is created, and a number of delta application blocks concerning the applied delta image is recorded as cost information of applying delta. The delta backup restore unit determines a restore method by comparing a number of blocks, which is changed when restore is performed by applying each piece of the reverse delta image, with a number of blocks, which is changed when the restore is performed by applying each delta image, with reference to the cost information of applying delta.
摘要:
Provided is a computer system capable of reliably eliminating duplicated data regardless of the size of the data write unit from the host computer to the storage subsystem or the management unit size in the elimination of duplicated data.This computer system executes the relocation of duplicated data to the storage resource so that the writing of duplicated data is started from the start location of the management unit based on the detection of data redundancy and recognition of the management unit size in the elimination of duplicated data.
摘要:
An interface for use in a backup management device that administers multiple generations of backup data by rotating a plurality of rewriteable backup media while recording backup data onto the backup media according to a predetermined backup cycle, the interface having a period display area displayed together with a time axis, predetermined areas of length corresponding to period length and divided by means of divider lines into areas equal in number to the number of save periods for which the backup data should be saved, and the length of each area being displayed as the length of each save period, wherein the period display area allows the save period to be modified by means of moving the divider line through operation of a pointing device by the user.
摘要:
To provide a storage management device capable of performing restore at a high speed. In the storage management device that manages backup and restore of data stored in a storage device, a temporary restored image is created by applying each required delta image to the full backup image, a reverse delta image before the application of the applied delta image is created, and a number of delta application blocks concerning the applied delta image is recorded as cost information of applying delta. The delta backup restore unit determines a restore method by comparing a number of blocks, which is changed when restore is performed by applying each piece of the reverse delta image, with a number of blocks, which is changed when the restore is performed by applying each delta image, with reference to the cost information of applying delta.