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<div><span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">Hello everyone,</span></div>
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<p style="margin:0px; line-height:normal"><span style="">I was reading the Measurements doc today, I got a bit confused about some measurements. such as :</span></p>
<p style="margin:0px; line-height:normal"><span style="line-height:normal"></span><span style="">disk.capacity </span><span style="line-height:normal">and </span><span style="">disk.device.capacity </span></p>
<p style="margin:0px; line-height:normal; min-height:17px"><span style=""></span></p>
<p style="margin:0px; line-height:normal"><span style="line-height:normal"> the </span><span style="">disk.capacity explanation: The amount of disk that the instance can see.</span></p>
<p style="margin:0px; line-height:normal"><span style=""></span><span style="line-height:normal"> the </span><span style="">disk.device.capacity explanation: The amount of disk
</span><span style="">per device</span><span style=""> that the instance can see.</span></p>
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<p style="margin:0px; line-height:normal"><span style="">I do not know what is the ¡®device¡¯ here. </span></p>
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<p style="margin:0px; line-height:normal; min-height:14px">I grap the disk info here:</p>
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<span style="">DiskInfoData(capacity=21475325952L, allocation=19580554752L, physical=21475325952L, per_disk_info={'allocation': {'vda': 19580554752L, 'hdd': 0L}, 'capacity': {'vda': 21474836480L, 'hdd': 489472L}, 'physical': {'vda': 21474836480L, 'hdd': 489472L}})</span></p>
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<p style="margin:0px; line-height:normal; min-height:14px">are these vda and hdd stand for different device? </p>
<p style="margin:0px; line-height:normal; min-height:14px"> </p>
<p style="margin:0px; line-height:normal"><span style="">what is the different between disk and disk.device? could you give me some helps?</span></p>
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<p style="margin:0px; line-height:normal"><span style="">Best regards</span></p>
<p style="margin:0px; line-height:normal"><span style="">Shengping</span></p>
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