Im trying to determine which hardware causing the bottleneck of the server, the server is mainly used for serving video files on a heavy traffic site.
The hardisk info using: smartctl -a /dev/sda
HDD info: Vendor: DELL Product: PERC H710P Revision: 3.13 User Capacity: 1,999,307,276,288 bytes [1.99 TB] Logical block size: 512 bytes Logical Unit id: 0x6b82a720d22304002116d6c01027fc4d Serial number: 004dfc2710c0d61621000423d220a782 Device type: disk Local Time is: Mon Sep 11 09:06:33 2017 CST Device does not support SMART Error Counter logging not supported Device does not support Self Test logging
how do i know which one is causing the bottleneck? using pure-ftp i always get listing directory failed, once i disable the nginx, i immediately able to list the directory. Now im not sure which is causing the bottleneck problem, either the max hdd data read or the network bandwidth, please help me so that i can decide to add a new hdd or add bandwidth.