Introduction to Disk Mirroring

CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems

How CMS implements disk mirroring

7

 

 

Mirror layouts

Mirror layouts on a factory-installed mirrored system differ depending upon the platform. When a system is upgraded to mirroring in the field, mirror layouts are essentially unpredictable, and depend on how many disk drives are already installed, and what their target numbers are.

Mirror layout on a Sun On a Sun Enterprise 3000 platform with factory-installed mirroring, the

Enterprise 3000

mirror layout is the simple odd/even arrangement shown in the table

computer

 

below. A system upgraded to mirroring in the field probably has a

 

 

 

 

 

different mirror layout.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mirror d13

 

mirror d21

 

mirror d17

 

 

 

 

 

 

 

(swap partition)

 

 

 

 

 

(/ (root) filesystem)

 

(/cms filesystem)

 

 

 

 

 

 

 

 

(CMS r3v8)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No.

submirror

submirror

 

submirror

submirror

 

submirror

submirror

 

 

 

Disks

d11

d12

 

d19

d20

 

d15

d16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

c0t0d0s0

c0t1d0s0

 

c0t0d0s3

c0t1d0s3

 

c0t0d0s4

c0t1d0s4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

c0t0d0s0

c0t1d0s0

 

c0t0d0s3

c0t1d0s3

 

c0t0d0s4

c0t1d0s4

 

 

 

 

 

 

c0t2d0s1

c0t3d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

c0t0d0s3

c0t1d0s3

 

 

 

 

 

 

 

 

c0t0d0s0

c0t1d0s0

 

c0t2d0s1

c0t3d0s1

 

c0t0d0s4

c0t1d0s4

 

 

 

 

 

 

 

 

c0t10d0s1

c0t11d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

c0t0d0s3

c0t1d0s3

 

 

 

 

 

 

 

 

c0t0d0s0

c0t1d0s0

 

c0t2d0s1

c0t3d0s1

 

c0t0d0s4

c0t1d0s4

 

 

 

 

 

 

c0t10d0s1

c0t11d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

c0t12d0s1

c0t13d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

c0t0d0s3

c0t1d0s3

 

 

 

 

 

 

 

 

 

 

 

c0t2d0s1

c0t3d0s1

 

 

 

 

 

 

 

 

c0t0d0s0

c0t1d0s0

 

c0t10d0s1

c0t11d0s1

 

c0t0d0s4

c0t1d0s4

 

 

 

 

 

 

 

 

c0t12d0s1

c0t13d0s1

 

 

 

 

 

 

 

 

 

 

 

c0t14d0s1

c0t15d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 12 Page 14
Page 13
Image 13
Lucent Technologies 585-210-940 manual Mirror layouts, Mirror d13 Mirror d21 Mirror d17, Root filesystem Cms filesystem
Page 12 Page 14

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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