American Megatrends ManageTrends 2.7, Руководство пользователя

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Glossary 335
SRM
System Resource Management. System Resource Management (SRM) is a term used to
describe the mechanism and process of data collection, data usage analysis, and trending
in a storage appliance. In brief, SRM performs the following tasks in a storage system:
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Discovery of storage nodes
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Storage provisioning and capacity management
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Performance monitoring and characterization
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Backup and recovery management
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Workflow management
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Presentation and reporting mechanisms
State
A state is a text description or status used to describe whether or not the hardware feature
is within reasonable temperature, voltage, or revolutions per minute thresholds.
Stripe Size
Disk striping writes data across multiple hard disk drives instead of just one hard disk
drive. Disk striping involves partitioning each hard disk drive storage space into stripes
that can vary in size. These stripes are interleaved in a repeated sequential manner. The
combined storage space is composed of stripes from each drive.
StorTrends® iTX
software supports stripe sizes of 8 KB to 512 KB.
For example, in a four hard disk drive system using only disk striping (as in RAID level
0), segment one is written to hard disk drive one, segment two is written to hard disk
drive two, and so on. Disk striping enhances performance because multiple hard disk
drives are accessed simultaneously; but disk striping does not provide data redundancy.
Subnet Mask
A mask used to determine what subnet an IP address belongs to. An IP address has two
components, the network address and the host address. Subnetting enables the network
administrator to further divide the host part of the address into two or more subnets. A
part of the host address is reserved to identify the particular subnet.
Switch
A network device that selects a path or circuit for sending a unit of data to its next
destination.