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OceanStor 9000 V300R006C00 File System Feature Guide 12

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Requirement Analysis

Requirement Analysis

This section analyzes the requirements of a customer that uses InfoReplicator to back up its storage systems, provides information collected from the customer's network environment, and recommends an appropriate replication solution.

Customer Requirements

The customer (a large-scale enterprise) wants to purchase two sets of enterprise-class distributed clustered NAS storage systems to expand its business. The two storage systems must provide the ability of remote replication. The two storage systems must be deployed in two data centers in city B, one in data center D and the other in data center Y, and serve as backup for each other. One storage system works as the production system and the other the disaster recovery system. A switchover must be manually performed between the two storage systems every half year to ensure data reliability.

Based on these requirements, we have conducted in-depth analysis on the status quo of customer business and the needs for remote replication. The following presents only analysis on the needs for remote replication and omits other irrelevant analysis.

Service Model

The customer's NAS storage systems mainly run the following types of business:
  • Image file storage: Application servers periodically generate PDF image files and store them to the NAS systems.
  • Video file storage: Application servers store video files to the NAS systems and access them frequently.
  • Log file storage: Log files regenerated by upper-layer applications (including the image file and video file storage services) are periodically stored to the NAS systems.
The application servers access the NAS systems as NAS clients through the CIFS protocol. The NAS systems authenticate the clients by local authentication instead of domain authentication. Table 6-6 shows the service model.
Table 6-6  Service model
Application Item Status Quo
Image file storage Number of clients Two application servers are deployed in data center D and another two in data center Y. Each two servers work in active-standby mode.
Client operating system Windows Server 2003
File size 1 MB to 5 MB
Directory structure Subdirectories are created for different business and the directory hierarchy is represented as a series of folders named after dates.
Data amount The data increment each day is about 50 GB.
Video file storage Number of clients Four application servers are deployed in data center D and another four in data center Y. Each two servers work in active-standby mode.
Client operating system Mac OS X (10.7.5)
File size 100 MB to 500 MB (bit rate: 100 Mbit/s)
Directory structure Subdirectories are created and named after dates. Four servers write data to the same root directory.
Data amount The data increment each day is about 50 GB.
Log file storage Number of clients The clients are the application servers that process image and video files.
File size Each business system appends one log file every day. The size of a log file is about 1 GB.
Directory structure Each business system uses one directory.
Data amount The data increment each day is about 2 GB.

Existing Network

Figure 6-19 shows the customer's network diagram, and Table 6-7 describes the network planning. The data centers are connected by optical fibers.
Figure 6-19  Network diagram
Table 6-7  Network planning

Data Center

Network

Network Address

Description

Data center D

Service network
  • Available network segment: 192.168.0.0/16
  • Unused network segment: 192.168.1.0/24
10GE network
Management network 10.110.100.0/24 GE network
Data center Y Service network
  • Available network segment: 192.168.0.0/16
  • Unused network segment: 192.168.2.0/24
10GE network
Management network 10.110.101.0/24 GE network

Remote Replication Requirements

The customer's requirements for remote replication functions, performance, and operation and maintenance (O&M) are as follows:
  • Function requirements
    • Data replication between two data centers in the same city
    • Failover and failback
    • Disaster recovery testing
  • Performance requirements
    • RPO of less than one hour
    • Temporary service interruption during replication deployment
  • O&M requirements
    • Visual management
    • Display of replication status
    • System status monitoring and alarms
    • Easy O&M by one click

Recommended Solution

We analyze the requirement compliance of the InfoReplicator feature of the OceanStor 9000 based on the customer requirements and onsite data, and recommend the following solution:
  • Deploy one OceanStor 9000 in data center D and another in data center Y to replace the existing NAS systems, and enable InfoReplicator on each newly deployed storage system.
  • Configure three nodes for each OceanStor 9000 to ensure the access performance, and use 10GE networks as both the front-end and back-end networks.
  • In site-to-site backup scenarios, replicate data from data center D to data center Y. Normally, data center D serves as the production site and data center Y as the disaster recovery site.
  • Set the replication mode to automatic synchronization and the minimum synchronization interval to 15 minutes to ensure a minimum recovery point objective (RPO) of 30 minutes.
  • InfoReplicator supports a graphical user interface (GUI) DeviceManager as well as a command-line interface (CLI) to facilitate your O&M.
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Updated: 2019-06-27

Document ID: EDOC1000122519

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