NDMP 备份速度较慢
适用于
- ONTAP 9
- NDMP
- DMA (数据管理应用程序)
- 性能
问题描述
- 使用 Backup server 的卷备份之一的慢速备份
- 经过调查，所有 NDMP 备份在第 3 和第 4 阶段都很慢：
Mon Jul 26 18:00:53 SAST 202 /<vserver>/Abrasives/(4) Log_msg (Phase 3 throughput (MB sec): read 1 write 5
Mon Jul 26 18:00:53 SAST 202 /<vserver>/Abrasives/(4) Log_msg (Phase 4 throughput (MB sec): read 0 write 3
Mon Jul 26 18:01:49 SAST 202 /<vserver>/Tech_and_Spec/(2) Log_msg (Phase 3 throughput (MB sec): read 3 write 6
Mon Jul 26 18:01:49 SAST 202 /<vserver>/Tech_and_Spec/(2) Log_msg (Phase 4 throughput (MB sec): read 2 write 3
Mon Jul 26 18:02:31 SAST 202 /<vserver>/R_and_D/(3) Log_msg (Phase 3 throughput (MB sec): read 4 write 8
Mon Jul 26 18:02:31 SAST 202 /<vserver>/R_and_D/(3) Log_msg (Phase 4 throughput (MB sec): read 2 write 3
Mon Jul 26 19:22:51 SAST 202 /<vserver>/Home/(1) Log_msg (Phase 3 throughput (MB sec): read 1 write 6
Mon Jul 26 19:22:51 SAST 202 /<vserver>/Home/(1) Log_msg (Phase 4 throughput (MB sec): read 3 write 3
Tue Jul 27 18:00:53 SAST 202 /<vserver>/Abrasives/(3) Log_msg (Phase 3 throughput (MB sec): read 1 write 7
Tue Jul 27 18:00:53 SAST 202 /<vserver>/Abrasives/(3) Log_msg (Phase 4 throughput (MB sec): read 0 write 3
Tue Jul 27 18:02:40 SAST 202 /<vserver>/R_and_D/(4) Log_msg (Phase 3 throughput (MB sec): read 4 write 8
Tue Jul 27 18:02:40 SAST 202 /<vserver>/R_and_D/(4) Log_msg (Phase 4 throughput (MB sec): read 2 write 3
Tue Jul 27 18:07:27 SAST 202 /<vserver>/Tech_and_Spec/(2) Log_msg (Phase 3 throughput (MB sec): read 6 write 11
Tue Jul 27 18:07:27 SAST 202 /<vserver>/Tech_and_Spec/(2) Log_msg (Phase 4 throughput (MB sec): read 3 write 3
Tue Jul 27 19:38:01 SAST 202 /<vserver>/Home/(1) Log_msg (Phase 3 throughput (MB sec): read 1 write 6
Tue Jul 27 19:38:01 SAST 202 /<vserver>/Home/(1) Log_msg (Phase 4 throughput (MB sec): read 3 write 3
Dump to Null 速度是可以的：
Tue Jul 27 16:42:09 SAST 202 /vol/Data/(1) Log_msg (Phase 3 throughput (MB sec): read 22 write 39
Tue Jul 27 16:42:09 SAST 202 /vol/Data/(1) Log_msg (Phase 4 throughput (MB sec): read 241 write 241