Introduction to Disk Mirroring

CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems

Disk mirroring defined

2

 

 

The illustration below shows a simple, two-slice metadevice.

Physical Disks A & B

Metadevice d0

c0t0d0s2

c1t0d0s2

c0t0d0s2

c1t0d0s2

Concatenated

A metadevice can be configured as any one of three basic types: striped,

metadevices

concatenated, or concatenated stripes. The type used by CMS systems

 

is the concatenated metadevice. In a concatenated metadevice, data

 

blocks, or chunks, are written sequentially across the slices, beginning

 

with the first disk.

 

 

Consider, for example, a concatenated metadevice with three slices (see

 

the illustration below.) In that scenario, disk A can be envisioned as

 

containing logical chunks 1 through 4, disk B as containing logical

 

chunks 5 through 8, and disk C as containing chunks 9 through 12.

 

Physical Disk A

 

 

Chunk 1

 

 

Chunk 2

 

 

Chunk 3

 

 

Chunk 4

Metadevice d1

 

Physical Disk B

 

 

Chunk 5

Chunk 1

 

Chunk 2

 

 

 

Chunk 6

. . .

 

Solstice DiskSuite

Chunk 7

. . .

 

Chunk 8

. . .

 

Physical Disk C

Chunk 12

 

Chunk 9

 

Chunk 10

 

Chunk 11

 

Chunk 12

 

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Lucent Technologies 585-210-940 manual Concatenated
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585-210-940 specifications

Lucent Technologies, founded in 1996 as a spin-off from AT&T, emerged as a leader in telecommunications, contributing significantly to the advancement of network technologies. The model 585-210-940, an innovative product from Lucent, exemplifies their commitment to providing cutting-edge solutions for communication networks.

The 585-210-940 is primarily recognized as a digital cross-connect system (DCS) designed to manage and route digital voice and data traffic efficiently. This system plays a crucial role in facilitating seamless communication by allowing service providers to interconnect different digital circuits and manage bandwidth effectively. One of the main features of the 585-210-940 is its ability to support multiple protocols, which enhances interoperability among diverse communication platforms.

A standout characteristic of this system is its scalability. The 585-210-940 can adapt to growing network demands, making it suitable for both small enterprises and large service providers. This flexibility ensures that users can expand their systems without a complete overhaul, thereby reducing costs and downtime during upgrades. Additionally, the system provides fault tolerance, ensuring high availability and reliability, which are essential metrics for any critical telecommunications infrastructure.

Lucent Technologies also integrated advanced monitoring and management capabilities into the 585-210-940. This feature allows operators to track performance metrics and identify potential issues in real time. The system includes a user-friendly interface that simplifies network management tasks, making it accessible to operators with varying levels of technical expertise.

Moreover, the 585-210-940 is designed to support high capacity, handling numerous channels simultaneously without compromising performance. This capability is particularly beneficial in environments with heavy data traffic, such as urban centers or large corporate hubs.

In conclusion, Lucent Technologies' 585-210-940 serves as a robust solution for telecommunications, encapsulating many of the core innovations of the late 20th century. With its support for multiple protocols, scalability, fault tolerance, and advanced management capabilities, it stands out as an essential component for any modern communication network, reflecting Lucent's legacy in the industry.
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