Fujitsu ETERNUS DX500 S3 Overview page 61

Chapter 4 SAN Functions
4.4 Server Linkage Functions
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VMware VASA
vStorage API for Storage Awareness (VASA) is an API that enables vCenter Server to link with the storage sys-
tem and obtain storage system information. With VMware, VASA integrates the virtual infrastructure of the
storage, and enhances the Distributed Resource Scheduling (DRS) function and the troubleshooting efficien-
cy.
Profile-Driven Storage
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The Profile-Driven Storage function classifies volumes according to the service level in order to allocate vir-
tual machines with the most suitable volumes.
Distributed Resource Scheduler (Storage DRS)
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The Storage DRS function moves original data in virtual machines to the most suitable storage area accord-
ing to the access volume. Storage DRS balances the loads on multiple physical servers in order to eliminate
the need for performance management on each virtual machine.
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VMware VAAI
vStorage APIs for Array Integration (VAAI) are APIs that improve system performance and scalability by using
the storage system resources more effectively.
The ETERNUS DX supports the following features.
Full Copy (XCOPY)
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Data copying processes can be performed in the ETERNUS DX without the use of a server such as when
replicating or migrating the virtual machine. With Full Copy (XCOPY), the load on the servers is reduced
and the system performance is improved.
• Block Zeroing
When allocating storage areas to create new virtual machines, it is necessary to zero out these storage
areas for the initialization process. This process was previously performed on the server side. By performing
this process on the ETERNUS DX side instead, the load on the servers is reduced and the dynamic capacity
allocation (provisioning) of the virtual machines is accelerated.
• Hardware Assisted Locking
This control function enables the use of smaller blocks that are stored in the ETERNUS DX for exclusive con-
trol of specific storage areas.
Compared to LUN (logical volume) level control that is implemented in "VMware vSphere", enabling access
control in block units minimizes the storage areas that have limited access using exclusive control and im-
proves the operational efficiency of virtual machines.
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VMware vCenter Server
• vCenter linkage
Various information of the ETERNUS DX can be displayed on vSphere Web Client by expanding the user
interface of VMware Web Client. Because storage side information is more visualized, integrated manage-
ment of the infrastructure under a virtual environment can be realized and usability can be improved.
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Disk storage system Overview
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