Slow NBD performance when backing up VMs
Hello, We are using VMware vSphere 7 running on Cisco UCS blade system. VMDK data storage is NFS on a Netapp AFF A400 storage system. NetBackup 10.1 media server is running on RHEL8 in a VM and has ...
Found this one here ...
https://kb.vmware.com/s/article/83401
Maybe the Netapp FAS 2720 is not the fastest for write operations as NFS BasicDisk backup target ...fas2720::*> statistics disk show -sort-key operation_latency fas2720 : 7/3/2023 08:14:48 Busy Total Read Write Read Write *Latency Disk Node (%) Ops Ops Ops (Bps) (Bps) (us) ----- --------- ---- ----- ---- ----- ------- ----- -------- 1.3.5 adncl3-01 43 52 51 0 1773568 1024 24856 1.2.11 adncl3-01 50 52 52 0 1957888 2048 21840 1.2.7 adncl3-01 48 57 57 0 2040832 0 21415 1.4.9 adncl3-01 52 65 65 0 2387968 1024 21167 1.5.7 adncl3-01 47 50 50 0 2055168 0 20383 1.3.7 adncl3-01 51 68 68 0 2185216 0 19792 1.3.9 adncl3-01 45 57 57 0 2135040 0 19122 1.3.11 adncl3-01 44 52 52 0 2073600 0 19058 1.1.11 adncl3-01 44 57 57 0 2018304 21504 18197 1.4.7 adncl3-01 43 54 54 0 2242560 3072 18115 1.5.9 adncl3-01 44 60 59 0 2264064 2048 16991 1.2.9 adncl3-01 43 62 62 0 2221056 3072 16816 1.0.3 adncl3-01 24 72 69 2 2379776 175104 15037 1.1.9 adncl3-01 45 69 68 0 2337792 1024 14815 1.5.1 adncl3-01 33 58 57 0 1985536 4096 13554 1.1.5 adncl3-01 31 54 53 0 1774592 2048 13319 1.4.1 adncl3-01 34 58 58 0 1604608 3072 13197 1.3.3 adncl3-01 32 54 54 0 1701888 10240 13128 1.2.5 adncl3-01 32 53 53 0 1820672 0 12883 1.4.5 adncl3-01 33 63 62 0 2308096 10240 12650 1.5.5 adncl3-01 32 52 52 0 2238464 1024 12607 1.4.3 adncl3-01 32 53 53 0 1920000 2048 12573 1.5.3 adncl3-01 35 59 59 0 2415616 2048 12140 1.2.3 adncl3-01 31 53 53 0 1628160 0 11767 1.1.3 adncl3-01 30 55 55 0 2255872 0 11027Compared to Netapp AFF A400 all-flash system for VMware VMDK disk storage.
affa400::*> statistics disk show -sort-key operation_latency affa400 : 7/3/2023 08:32:56 Busy Total Read Write Read Write *Latency Disk Node (%) Ops Ops Ops (Bps) (Bps) (us) ----- --------------- ---- ----- ---- ----- -------- -------- -------- 1.1.0 Multiple_Values 0 387 342 44 11252736 10230784 152 1.0.4 Multiple_Values 0 431 373 58 12254208 11289600 150 1.1.21 Multiple_Values 0 433 377 56 12266496 11183104 141 1.0.17 adncl2-02 0 427 294 132 6013952 6899712 136 1.0.16 Multiple_Values 0 788 654 134 11297792 6376448 124 1.0.0 Multiple_Values 0 404 357 46 11068416 10337280 124 1.0.19 Multiple_Values 0 809 667 142 10535936 6147072 122 1.0.14 Multiple_Values 0 797 648 149 11408384 6798336 122 1.1.3 Multiple_Values 0 422 287 134 5437440 5969920 120 1.0.11 Multiple_Values 0 834 678 156 12203008 6723584 118 1.0.1 Multiple_Values 0 799 647 152 11014144 5924864 118 1.1.5 Multiple_Values 0 772 639 133 11672576 5780480 117 1.1.18 Multiple_Values 0 445 308 137 5679104 5788672 117 1.0.3 Multiple_Values 0 791 655 135 12166144 5995520 117 1.0.12 Multiple_Values 0 803 662 141 11409408 6824960 117 1.0.9 Multiple_Values 0 726 606 119 11119616 6731776 116 1.1.1 Multiple_Values 0 815 667 148 10887168 6126592 112 1.1.20 Multiple_Values 0 742 613 129 10509312 5449728 111 1.1.19 Multiple_Values 0 795 648 147 11213824 5847040 111 1.0.8 Multiple_Values 0 814 659 154 10331136 5297152 111 1.1.23 Multiple_Values 0 756 638 118 11285504 6646784 110 1.1.2 Multiple_Values 0 780 633 147 10660864 6048768 110 1.1.4 Multiple_Values 0 795 638 156 11356160 6163456 109 1.1.22 Multiple_Values 0 759 627 132 10919936 6013952 109 1.0.7 Multiple_Values 0 782 632 149 11244544 6273024 105
