A quick way to check the type of the drive
Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
It's already known that the host is a physical machine and not a VM.
The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.
Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.
linux storage proc
asked 2 hours ago
lesovskylesovsky
314
add a comment |
Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
It's already known that the host is a physical machine and not a VM.
The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.
Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.
linux storage proc
asked 2 hours ago
lesovskylesovsky
314
add a comment |
Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
It's already known that the host is a physical machine and not a VM.
The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.
Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.
linux storage proc
asked 2 hours ago
lesovskylesovsky
314
Is there a quick way to understand a type of the "storage" on Linux? Is it a HDD or SSD (or NVMe)?
It's already known that the host is a physical machine and not a VM.
The first thing I though about was rotational flag under /sys/block/<device>/queue/ directory. But in my experience even for SSD devices it may contain "1" value.
The second way and more realistic and truthful was a latency. It's a bit harder to measure (some work with /proc/diskstats), but looks more preferable.
Is there any other ways? It's important to mention that I don't need to know exact model of the "storage", just its type.
linux storage proc
linux storage proc
asked 2 hours ago
lesovskylesovsky
314
asked 2 hours ago
lesovskylesovsky
314
asked 2 hours ago
lesovskylesovsky
314
asked 2 hours ago
lesovskylesovsky
314
asked 2 hours ago
lesovskylesovsky
314
314
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
1
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
add a comment |
A simple command:
sudo lshw -c disk
answered 45 mins ago
d a i s yd a i s y
1741214
Also looks interesting, but output oflshwdoesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign
– lesovsky
38 mins ago
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
1
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
add a comment |
How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
1
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
add a comment |
How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
How about something like sudo smartctl -a /dev/<device> | grep Rotation -- if this returns Rotation Rate: Solid State Device, then that's an SSD. Not sure if this bullet-proof method, either.
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
answered 2 hours ago
Janne PikkarainenJanne Pikkarainen
28k33966
28k33966
1
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
add a comment |
1
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
1
1
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
Looks good, it works even with drives attached through RAID cards.
– lesovsky
45 mins ago
add a comment |
A simple command:
sudo lshw -c disk
answered 45 mins ago
d a i s yd a i s y
1741214
Also looks interesting, but output oflshwdoesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign
– lesovsky
38 mins ago
add a comment |
A simple command:
sudo lshw -c disk
answered 45 mins ago
d a i s yd a i s y
1741214
Also looks interesting, but output oflshwdoesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign
– lesovsky
38 mins ago
add a comment |
A simple command:
sudo lshw -c disk
answered 45 mins ago
d a i s yd a i s y
1741214
A simple command:
sudo lshw -c disk
answered 45 mins ago
d a i s yd a i s y
1741214
answered 45 mins ago
d a i s yd a i s y
1741214
answered 45 mins ago
d a i s yd a i s y
1741214
answered 45 mins ago
d a i s yd a i s y
1741214
1741214
Also looks interesting, but output oflshwdoesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign
– lesovsky
38 mins ago
add a comment |
Also looks interesting, but output oflshwdoesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign
– lesovsky
38 mins ago
Also looks interesting, but output of
lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign– lesovsky
38 mins ago
Also looks interesting, but output of
lshw doesn't show explicit info about "rotational" capability. I can make a conslusion using sector size value but it's indirect sign– lesovsky
38 mins ago
add a comment |
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