Cisco UCS C220 M3 Руководство по конфигурации - Страница 10

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Также для Cisco UCS C220 M3: Краткое руководство по эксплуатации (29 страниц), Руководство по обновлению (10 страниц), Краткое руководство по эксплуатации (12 страниц)

Table 8.

RAID 60

Uses

Advantages

Limitations

Drives

Figure 9.

Cisco Integrated Management Controller Overview

The Cisco IMC is the management service for the Cisco UCS C-Series Rack Servers. Cisco IMC runs within the

server. The Cisco IMC GUI is a web-based management interface. You can launch the GUI and manage the

server from any remote host that meets the following minimum requirements:

●

Java 1.6 or later

●

HTTP and HTTPS enabled

●

Adobe Flash Player 10 or higher

RAID 60

● Provides a high level of data protection through the use of a second parity block in each stripe

● Good for data that requires a very high level of protection from loss

● In the event of a failure of one drive or two drives in a RAID set in a virtual drive, the RAID controller uses the

parity blocks to re-create all the missing information

● If two drives in a RAID 6 set in a RAID 60 virtual drive fail, two drive rebuild operations are required, one for each

drive, and these rebuild operations can occur at the same time

● Use for office automation and online customer service that require fault tolerance

● Use for any application that has high read request rates but low write request rates

● Provides data redundancy, high read rates, and good performance in most environments

● Each RAID 6 set can survive the loss of two drives or the loss of a drive while another drive is being rebuilt

● Provides the highest level of protection against drive failures of all of the RAID levels

● Read performance is similar to that of RAID 50, though random read operations in RAID 60 may be slightly

faster because data is spread across at least one more disk in each RAID 6 set

● Not well suited to tasks requiring numerous write operations; a RAID 60 virtual drive has to generate two sets of

parity data for each write operation, which results in a significant decrease in performance during write

operations

● Drive performance is reduced during a drive rebuild

● Not well suited for environments with few processes; such environments do not perform as well because the

RAID overhead is not offset by the performance gains in handling simultaneous processes

● Costs more because of the additional capacity required to use two parity blocks per stripe

A minimum of 8

RAID 60 Drive Group

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