Introduction to Disk Mirroring

CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems

How CMS implements disk mirroring

8

 

 

Mirror layout on a Sun On a Sun Enterprise 3500 platform, the mirror layout must always be

Enterprise 3500

based upon the bays in which the disks are installed. Submirrors 11, 15,

computer

 

and 19 are the disks in the lower bay (targets 0 through 3 on controller 0);

 

 

 

 

 

submirrors 12,16, and 20 are the disks in the upper bay (targets 4

 

 

 

 

 

through 7 on controller 1). The table below shows the 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

c1t4d0s0

 

c0t0d0s3

c1t4d0s3

 

c0t0d0s4

c1t4d0s4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

c0t0d0s0

c1t4d0s0

 

c0t0d0s3

c1t4d0s3

 

c0t0d0s4

c1t4d0s4

 

 

 

 

 

c0t1d0s1

c1t5d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

c0t0d0s3

c1t4d0s3

 

 

 

 

 

 

6

 

c0t0d0s0

c1t4d0s0

 

c0t1d0s1

c1t5d0s1

 

c0t0d0s4

c1t4d0s4

 

 

 

 

 

 

 

 

c0t2d0s1

c1t6d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

c0t0d0s3

c1t4d0s3

 

 

 

 

 

 

8

 

c0t0d0s0

c1t4d0s0

 

c0t1d0s1

c1t5d0s1

 

c0t0d0s4

c1t4d0s4

 

 

 

 

 

c0t2d0s1

c1t6d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

c0t3d0s1

c1t7d0s1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Required hardware In order for your CMS system to be mirrored, it must have the following hardware installed in addition to the hardware already installed:

For a Sun Enterprise 3500 system, two GigaByte Interface Converter (GBIC) modules. One will be installed into the UA slot on the FC-AL Interface board, and the other will be installed into GBIC Port 1 on the Sbus I/O board (see the illustration on page 15).

For a Sun Enterprise 3500 system, a fiber cable to connect the UA port GBIC to GBIC Port 1 on the I/O board.

Twice the number of disk drives needed for an unmirrored system. All the disks must be the same size.

Page 14
Image 14
Lucent Technologies 585-210-940 manual Enterprise

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.