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Veritas NetBackup™ Appliance 容量规划和性能调整指南

Last Published: 2020-10-05

Product(s): Appliances (3.3.0.1)

Platform: NetBackup Appliance OS

验证网络带宽

建议在部署前测试您的网络带宽，以仅确保不存在任何带宽瓶颈。确保网络运行良好可防止在使用设备执行复制、备份和还原测试时出现任何意外事件。有多种工具可用于测试网络带宽。

可以在所有设备中使用 Nbperfchk 命令，该命令可以测量在 I/O 通过 NetBackup 和 NetBackup Appliance 时的网络和磁盘读取/写入速度。它可用于在启动主服务器域之间的 AIR 复制之前在部署前阶段测量网络速度，或者在向客户执行备份和还原演示前测量设备存储上的磁盘写入速度以检查任何存储 I/O 性能问题。请确保在运行任何网络或存储性能测试前配置设备的网络配置和存储配置。可以从设备的 Shell 菜单运行 Nbperfchk：Support->Nbperfchk

要使用 nbperfchk 在两台设备之间进行网络带宽测试，请在一台设备上将 nbperfchk 作为读取器运行，在另一台上作为写入器运行，示例：

Reader
symmaster-a.Support> Nbperfchk run 
Please enter options:
nbperfchk -i tcp::5000 -o null

Writer
Symmaster-b.Support> Nbperfchk run
Please enter options:
nbperfchk -i zero: -o tcp:symmaster-a:5000

在上述示例中，symmaster-b 设备会将数据发送到 symmaster-a 的 5000 TCP/IP 端口。命令提供以下输出：

读取器的输出

symmaster-a.Support > Nbperfchk run 
Please enter options:
nbperfchk -i tcp::5000 -o null:
Statistics log are recorded in nbperfchk_results.log
current rcv buff: 262144, set to 524288
current snd buff: 262144, set to 524288
final receive size 262144, send size 262144
     226 MB @  113.1 MB/sec, 226 MB @  113.1 MB/sec, at 1369103091
     566 MB @  113.1 MB/sec, 339 MB @  113.2 MB/sec, at 1369103094
     905 MB @  113.1 MB/sec, 339 MB @  113.1 MB/sec, at 1369103097
    1245 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103100
    1585 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103103
    1925 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103106
    2265 MB @  113.1 MB/sec, 339 MB @  113.1 MB/sec, at 1369103109
    2604 MB @  113.1 MB/sec, 339 MB @  113.2 MB/sec, at 1369103112
    2944 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103115
    3284 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103118
    3624 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103121
    3964 MB @  113.2 MB/sec, 339 MB @  113.1 MB/sec, at 1369103124
    4303 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103127
    4643 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103130
    4983 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103133
    5322 MB @  113.2 MB/sec, 339 MB @  113.1 MB/sec, at 1369103136

写入器的输出

symmaster-b.Support > Nbperfchk run
Please enter options:
nbperfchk -i zero: -o tcp:symmaster-a:5000       
Statistics log are recorded in nbperfchk_results.log
current rcv buff: 262144, set to 524288
current snd buff: 262144, set to 524288
final receive size 1048576, send size 262144
     340 MB @  113.3 MB/sec, 340 MB @  113.3 MB/sec, at 1369103067
     680 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103070
    1020 MB @  113.2 MB/sec, 340 MB @  113.2 MB/sec, at 1369103073
    1360 MB @  113.3 MB/sec, 340 MB @  113.4 MB/sec, at 1369103076
    1701 MB @  113.4 MB/sec, 341 MB @  113.7 MB/sec, at 1369103079
    2040 MB @  113.3 MB/sec, 339 MB @  112.9 MB/sec, at 1369103082
    2381 MB @  113.3 MB/sec, 340 MB @  113.3 MB/sec, at 1369103085
    2721 MB @  113.3 MB/sec, 340 MB @  113.3 MB/sec, at 1369103088
    3060 MB @  113.2 MB/sec, 339 MB @  112.9 MB/sec, at 1369103091
    3400 MB @  113.2 MB/sec, 340 MB @  113.3 MB/sec, at 1369103094
    3740 MB @  113.2 MB/sec, 340 MB @  113.3 MB/sec, at 1369103097
    4080 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103100
    4420 MB @  113.2 MB/sec, 339 MB @  113.2 MB/sec, at 1369103103
    4759 MB @  113.2 MB/sec, 339 MB @  113.1 MB/sec, at 1369103106
    5099 MB @  113.2 MB/sec, 340 MB @  113.2 MB/sec, at 1369103109
output: Connection reset by peer

在上述示例中，平均网络吞吐量是 113.2 MB/秒。如果此网络吞吐量无法满足受保护的数据量，则需要检查网络基础架构，并且需要添加额外带宽。

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