I subscribed to a VPS where the storage supposed to be 100% SSD.
When I execute the following commands the result and performance are under my expectations (no any service is running on the VPS):
"[email protected]:~/installation$ sudo smartctl -a /dev/sda
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-42-generic] (local build)
Copyright © 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Product: QEMU HARDDISK
User Capacity: 322,122,547,200 bytes [322 GB]
Logical block size: 512 bytes
LU is thin provisioned, LBPRZ=0
Rotation Rate: 5400 rpm
Device type: disk
Local Time is: Tue Oct 11 15:05:26 2016 CEST
SMART support is: Unavailable - device lacks SMART capability.
[email protected]:~/installation$ dd if=/dev/zero of=test bs=1G count=1 oflag=direct
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 11.1125 s, 96.6 MB/s
[email protected]:~$ w
18:08:22 up 3:18, 3 users, load average: 0.14, 0.04, 0.01
USER TTY FROM [email protected] IDLE JCPU PCPU WHAT
stock tty7 :0 14:49 3:18m 47.35s 0.14s /sbin/upstart —user
stock pts/11 22.214.171.124 18:00 0.00s 0.01s 0.01s w
stock pts/1 :0.0 17:44 2:30 0.23s 0.23s bash
Why is it claim 5400RPM HDD and the speed of it below 100MB/s!?
The service operator claims: I’m the only one using the SSD, but I based on the output I doubt it…
Output from operator:
Your VPS is hosted on a host system with only SSD storage as you ordered it. Due
to the virtualization of your VPS it looks like you are only using harddisk
storage, but it is purely hosted on SSD. And a speedtest of your storage does
neither confirm that is a HDD nor that is a SSD as it depends on the usage of the
filesystem on the host system.