Emc IP Holding Company LLC

Chinese Academy of Sciences

Rui Chang

Min Zhang

Mao Ye

Qiulin Cheng

Shan Qiao

Fuhao Ji

Techniques for the storage management involve, in response to detecting that a storage device is plugged into the storage system, determining, at a computing device of a storage system and based on attributes of the storage device, a target interface device matching the storage device from a plurality of types of interface devices in the storage system, the interface device managing the storage device having attributes matching one of the plurality of types; determining an association between the storage device and the target interface device; and generating, based on the association, information characterizing a state of the storage device in the computing device. In this way, it is possible to support at least two different types of disks in the existing storage system, improving the compatibility and scalability of the system.

Methods, electronic devices, storage systems, and computer program products for storage management

An undulator comprises at least M permanent magnet periods arranged sequentially in a transmission direction of electron beams, each of the permanent magnet periods comprises four rows of permanent magnet structures, in which each row comprises N rows of permanent magnet groups, and each row of the permanent magnet groups comprises K permanent magnet units, wherein M, N and K are natural numbers greater than or equal to 1; the four rows of the permanent magnet structures are pairwise matched, then relatively disposed on both sides of the transmission direction of electron beams, and are capable of forming at least one composite magnetic fields by relative displacement, such that elliptically polarized light, circularly polarized light, or linearly polarized light with an arbitrary polarization angle of 0&#xb0;&#x2dc;360&#xb0; is generated when electron beams pass through the composite magnetic fields, and such that velocity directions of electrons are deviated from an axis direction of the undulator.

Undulator

Growing community of inventors

Shanghai, China

Rui Chang