A quick way to check the type of the drive












4















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







share|improve this question



























    4















    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







    share|improve this question

























      4












      4








      4








      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







      share|improve this question














      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






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 2 hours ago









      lesovskylesovsky

      314




      314






















          2 Answers
          2






          active

          oldest

          votes


















          2














          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.






          share|improve this answer



















          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            42 mins ago



















          1














          A simple command:



          sudo lshw -c disk





          share|improve this answer
























          • 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
            36 mins ago











          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "2"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fserverfault.com%2fquestions%2f950004%2fa-quick-way-to-check-the-type-of-the-drive%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          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.






          share|improve this answer



















          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            42 mins ago
















          2














          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.






          share|improve this answer



















          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            42 mins ago














          2












          2








          2







          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.






          share|improve this answer













          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.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 hours ago









          Janne PikkarainenJanne Pikkarainen

          28k33966




          28k33966








          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            42 mins ago














          • 1





            Looks good, it works even with drives attached through RAID cards.

            – lesovsky
            42 mins ago








          1




          1





          Looks good, it works even with drives attached through RAID cards.

          – lesovsky
          42 mins ago





          Looks good, it works even with drives attached through RAID cards.

          – lesovsky
          42 mins ago













          1














          A simple command:



          sudo lshw -c disk





          share|improve this answer
























          • 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
            36 mins ago
















          1














          A simple command:



          sudo lshw -c disk





          share|improve this answer
























          • 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
            36 mins ago














          1












          1








          1







          A simple command:



          sudo lshw -c disk





          share|improve this answer













          A simple command:



          sudo lshw -c disk






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 42 mins ago









          d a i s yd a i s y

          1741214




          1741214













          • 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
            36 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
            36 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
          36 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
          36 mins ago


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Server Fault!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid …



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fserverfault.com%2fquestions%2f950004%2fa-quick-way-to-check-the-type-of-the-drive%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          -

          Popular posts from this blog

          Fluorita

          Image
          Fluorita Fluorita (blau) amb pirita (daurat). Fórmula química CaF 2 Epònim fluor Localitat tipus Jáchymov Classificació Categoria Halurs Nickel-Strunz 10a ed. 3.AB.25 Nickel-Strunz 9a ed. 3.AB.25 Nickel-Strunz 8a ed. III/A.08 Dana 9.2.1.1 Heys 8.4.7 Propietats Sistema cristal·lí Cúbic Hàbit cristal·lí Sol presentar cubs; menys freqüentment dodecaedres. De vegades hexaoctaedres i tetrahexaedres. Per la combinació d'aquestes formes, les arestes dels cubs són sovint modificades. De vegades els cristalls poden presentar diferències de creixement entre les cares. Sovint s'observen cristalls compostos per sobrecreixement. Pot ser massiva, compacta, terrosa, columnar (poc freqüent), globular en agregats o botroïdal. Estructura cristal·lina a = 5.4626Å Simetria Classe (H-M): m 3 m (4/ m 3 2/ m ) - Hexoctaèdric; Grup espacial: Fm 3 m Color Blanc, groc, verd, violeta, vermell, rosa, blau o negre Mac...
          Read more

          Hulsita

          Image
          Hulsita Hulsita de la localitat tipus Fórmula química Fe 2+ 2 Fe 3+ O 2 BO 3 Epònim Alfred Hulse Brooks Localitat tipus mont Brooks, península de Seward, Nome Borough, Alaska, Estats Units Classificació Categoria borats Nickel-Strunz 10a ed. 6.AB.45 Nickel-Strunz 9a ed. 6.AB.45 Nickel-Strunz 8a ed. V/G.03 Dana 24.2.3.1 Heys 9.6.4 Propietats Sistema cristal·lí monoclínic Estructura cristal·lina a = 10,68Å; b = 3,09Å; c = 5,43Å; β = 94,15° Color negre Macles en [001]; un membre de la macla es troba girat 120° en relació a l'altre Exfoliació bona en {110} Duresa 3 Lluïssor vítria, submetàl·lica Densitat 4,28 g/cm 3 (mesurada); Més informació Estatus IMA mineral heretat (G) i mineral heretat (G) Any d'aprovació 1908 Referències [1] La hulsita és un mineral de la classe dels borats, que pertany al grup de la pinakiolita. Rep el seu nom en honor del nord-americà ...
          Read more

          Península de Txukotka

          Image
          Península de Txukotka Tipus Península Ubicació 66° N, 172° O  /  66°N , 172°O  / 66; -172 Mar mar dels Txuktxis La península de Txukotka a l'extrem oriental de Sibèria La península de Txukotka o península dels Txuktxis (en rus Чуко́тский полуо́стров , Txukotski poluóstrov ) és una península que es troba a l'extrem oriental d'Euràsia. Contingut 1 Descripció 2 Població 3 Vegeu també 4 Bibliografia Descripció L'estret de Bering, entre la península de Txukotka i la península de Seward a Alaska Foto de satèl·lit de la zona amb la península de Txukotka a l'esquerra El seu punt més extrem és el cap Dezhnev a la vora del nucli d'Uelen, un dels poquíssims llocs habitats de la zona. Al nord limita amb el mar dels Txuktxis i amb el mar de Bering al sud i amb l'estret de Bering a l'est. A la costa sud es troben la badia de Sant Lawrence i la badia de Kresta. La penínsu...
          Read more