Does virtualized HDD, which is based on SSD, have the same feature like HDD rather than SSD? [closed]











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As is known to us all, Macbook Pro's disk is SSD. When I install Centos 6.5 on it through VMware, the disk on virtual machine shows that it is HDD.
I use this command:
cat /sys/block/*/queue/rotational
and the result is:

1
1
1
1
1
1
1
1
1
1
1

which shows that it can rotate. But SSD has a good performance at random read while HDD does not. I want to know what features does the virtualized HDD have?






vmware hard-drive ssd







share|improve this question















closed as off-topic by MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy Nov 8 at 14:14


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions about general computing hardware and software are off-topic for Stack Overflow unless they directly involve tools used primarily for programming. You may be able to get help on Super User." – MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy

If this question can be reworded to fit the rules in the help center, please edit the question.













  • That is the very point of virtualization. What would happen if you ran that VM on another computer with a regular HDD?
    – GSerg
    Nov 7 at 9:07










  • Is there a programming reason behind this, or is this just asked on the wrong site?
    – MSalters
    Nov 7 at 9:13










  • @MSalters I want to test the performance of HBase on HDD and SSD. I regard this virtual machine as SSD.
    – lxc
    Nov 7 at 9:19










  • @ GSerg I don't do this experiment. But I think it must be HDD if that.
    – lxc
    Nov 7 at 9:21






  • 1




    It's not an experiment, it's what virtual machines are designed for. Virtual machines is not a way to run several OSs on one computer (there is dual boot for that), it is a way to abstract away hardware and have a logical "computer" that works the same on any physical hardware. Virtual machines are supposed to be moved between different physical computers, and their virtual hardware does not change when you do that. Your VM does not have the same graphics, sound or network card than your physical computer either. You define what hardware it has when you create it.
    – GSerg
    Nov 7 at 10:24

















up vote
0
down vote

favorite












As is known to us all, Macbook Pro's disk is SSD. When I install Centos 6.5 on it through VMware, the disk on virtual machine shows that it is HDD.
I use this command:
cat /sys/block/*/queue/rotational
and the result is:

1
1
1
1
1
1
1
1
1
1
1

which shows that it can rotate. But SSD has a good performance at random read while HDD does not. I want to know what features does the virtualized HDD have?






vmware hard-drive ssd







share|improve this question















closed as off-topic by MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy Nov 8 at 14:14


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions about general computing hardware and software are off-topic for Stack Overflow unless they directly involve tools used primarily for programming. You may be able to get help on Super User." – MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy

If this question can be reworded to fit the rules in the help center, please edit the question.













  • That is the very point of virtualization. What would happen if you ran that VM on another computer with a regular HDD?
    – GSerg
    Nov 7 at 9:07










  • Is there a programming reason behind this, or is this just asked on the wrong site?
    – MSalters
    Nov 7 at 9:13










  • @MSalters I want to test the performance of HBase on HDD and SSD. I regard this virtual machine as SSD.
    – lxc
    Nov 7 at 9:19










  • @ GSerg I don't do this experiment. But I think it must be HDD if that.
    – lxc
    Nov 7 at 9:21






  • 1




    It's not an experiment, it's what virtual machines are designed for. Virtual machines is not a way to run several OSs on one computer (there is dual boot for that), it is a way to abstract away hardware and have a logical "computer" that works the same on any physical hardware. Virtual machines are supposed to be moved between different physical computers, and their virtual hardware does not change when you do that. Your VM does not have the same graphics, sound or network card than your physical computer either. You define what hardware it has when you create it.
    – GSerg
    Nov 7 at 10:24















up vote
0
down vote

favorite









up vote
0
down vote

favorite











As is known to us all, Macbook Pro's disk is SSD. When I install Centos 6.5 on it through VMware, the disk on virtual machine shows that it is HDD.
I use this command:
cat /sys/block/*/queue/rotational
and the result is:

1
1
1
1
1
1
1
1
1
1
1

which shows that it can rotate. But SSD has a good performance at random read while HDD does not. I want to know what features does the virtualized HDD have?






vmware hard-drive ssd







share|improve this question















As is known to us all, Macbook Pro's disk is SSD. When I install Centos 6.5 on it through VMware, the disk on virtual machine shows that it is HDD.
I use this command:
cat /sys/block/*/queue/rotational
and the result is:

1
1
1
1
1
1
1
1
1
1
1

which shows that it can rotate. But SSD has a good performance at random read while HDD does not. I want to know what features does the virtualized HDD have?






vmware hard-drive ssd




vmware hard-drive ssd






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 7 at 13:02

























asked Nov 7 at 9:03









lxc

217




217




closed as off-topic by MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy Nov 8 at 14:14


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions about general computing hardware and software are off-topic for Stack Overflow unless they directly involve tools used primarily for programming. You may be able to get help on Super User." – MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy

If this question can be reworded to fit the rules in the help center, please edit the question.




closed as off-topic by MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy Nov 8 at 14:14


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "Questions about general computing hardware and software are off-topic for Stack Overflow unless they directly involve tools used primarily for programming. You may be able to get help on Super User." – MSalters, Machavity, Vega, NathanOliver, Stephen Kennedy

If this question can be reworded to fit the rules in the help center, please edit the question.












  • That is the very point of virtualization. What would happen if you ran that VM on another computer with a regular HDD?
    – GSerg
    Nov 7 at 9:07










  • Is there a programming reason behind this, or is this just asked on the wrong site?
    – MSalters
    Nov 7 at 9:13










  • @MSalters I want to test the performance of HBase on HDD and SSD. I regard this virtual machine as SSD.
    – lxc
    Nov 7 at 9:19










  • @ GSerg I don't do this experiment. But I think it must be HDD if that.
    – lxc
    Nov 7 at 9:21






  • 1




    It's not an experiment, it's what virtual machines are designed for. Virtual machines is not a way to run several OSs on one computer (there is dual boot for that), it is a way to abstract away hardware and have a logical "computer" that works the same on any physical hardware. Virtual machines are supposed to be moved between different physical computers, and their virtual hardware does not change when you do that. Your VM does not have the same graphics, sound or network card than your physical computer either. You define what hardware it has when you create it.
    – GSerg
    Nov 7 at 10:24




















  • That is the very point of virtualization. What would happen if you ran that VM on another computer with a regular HDD?
    – GSerg
    Nov 7 at 9:07










  • Is there a programming reason behind this, or is this just asked on the wrong site?
    – MSalters
    Nov 7 at 9:13










  • @MSalters I want to test the performance of HBase on HDD and SSD. I regard this virtual machine as SSD.
    – lxc
    Nov 7 at 9:19










  • @ GSerg I don't do this experiment. But I think it must be HDD if that.
    – lxc
    Nov 7 at 9:21






  • 1




    It's not an experiment, it's what virtual machines are designed for. Virtual machines is not a way to run several OSs on one computer (there is dual boot for that), it is a way to abstract away hardware and have a logical "computer" that works the same on any physical hardware. Virtual machines are supposed to be moved between different physical computers, and their virtual hardware does not change when you do that. Your VM does not have the same graphics, sound or network card than your physical computer either. You define what hardware it has when you create it.
    – GSerg
    Nov 7 at 10:24


















That is the very point of virtualization. What would happen if you ran that VM on another computer with a regular HDD?
– GSerg
Nov 7 at 9:07




That is the very point of virtualization. What would happen if you ran that VM on another computer with a regular HDD?
– GSerg
Nov 7 at 9:07












Is there a programming reason behind this, or is this just asked on the wrong site?
– MSalters
Nov 7 at 9:13




Is there a programming reason behind this, or is this just asked on the wrong site?
– MSalters
Nov 7 at 9:13












@MSalters I want to test the performance of HBase on HDD and SSD. I regard this virtual machine as SSD.
– lxc
Nov 7 at 9:19




@MSalters I want to test the performance of HBase on HDD and SSD. I regard this virtual machine as SSD.
– lxc
Nov 7 at 9:19












@ GSerg I don't do this experiment. But I think it must be HDD if that.
– lxc
Nov 7 at 9:21




@ GSerg I don't do this experiment. But I think it must be HDD if that.
– lxc
Nov 7 at 9:21




1




1




It's not an experiment, it's what virtual machines are designed for. Virtual machines is not a way to run several OSs on one computer (there is dual boot for that), it is a way to abstract away hardware and have a logical "computer" that works the same on any physical hardware. Virtual machines are supposed to be moved between different physical computers, and their virtual hardware does not change when you do that. Your VM does not have the same graphics, sound or network card than your physical computer either. You define what hardware it has when you create it.
– GSerg
Nov 7 at 10:24






It's not an experiment, it's what virtual machines are designed for. Virtual machines is not a way to run several OSs on one computer (there is dual boot for that), it is a way to abstract away hardware and have a logical "computer" that works the same on any physical hardware. Virtual machines are supposed to be moved between different physical computers, and their virtual hardware does not change when you do that. Your VM does not have the same graphics, sound or network card than your physical computer either. You define what hardware it has when you create it.
– GSerg
Nov 7 at 10:24



















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