American Megatrends ManageTrends 2.7, Руководство пользователя

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StorTrends® 1300 User’s Guide (StorTrends iTX version 2.7) 322
Group
A group is a number of users that are bunched together. Having a group makes it easier to
assign a set of rules that are common to a set of users. Common groups can be
Accounting, Sales, Marketing, and so on.
HA
High Availability or HA is a term used in this document to describe the system design
protocol and associated implementation that ensures a certain absolute degree of
operational continuity during a given measurement period.
This Feature allows two StorTrends iTX (version 2.7 and newer) SAN Heads to be
grouped as highly-available cluster nodes for Microsoft initiators. This, together with
MPIO DSM for StorTrends will allow deploying solutions with extreme fault tolerance
and total availability. This solution provides protection against disk failures, path failures
and node failures. In the event of Node failure, the Failover action is automatic and
seamless. When the Failed node comes up, it is detected by the stack and is synchronized
quickly to bring back redundancy to the setup. Synchronization is very efficient and
ensures that only out-of-sync data is resynced.
HAK
Host Attach Kit. Volume Shadow Copy service (VSS) was introduced by Microsoft in
Windows 2003 Server; Windows 2000 and Windows XP do not have native support for
VSS, as both were released prior to Windows
®
2003 Server. However, StorTrends iTX
offers a solution for this potential obstacle through its Snapshot Agent Framework
Environment (SAFE). SAFE is a component of the StorTrends iTX Host Attach Kit,
which also includes the StorTrends iTX Scheduler service and the StorTrends iTX
Hardware Provider for VSS environments. SAFE automatically verifies if the
environment is VSS or non-VSS, and acts accordingly.
The StorTrends iTX HAK also contains agents for Microsoft
®
Exchange and Oracle
®
that assist in suspending the respective applications during the process of creating
snapshots in non-VSS environments. This function is essentially identical to the role of
writers in the VSS environment.
Host
A computer that is connected to a TCP/IP network, including the Internet. Each host has
a unique IP address.
HTTP
An application protocol that is the set of rules for exchanging files (text, graphic images,
sound, video, and other multimedia files) on the World Wide Web.