आज का प्रश्न और उत्तर सत्र हमारे पास सुपरयूसर की सौजन्य है - स्टैक एक्सचेंज का एक उपविभाग, क्यू एंड ए वेब साइट्स का एक समुदाय संचालित समूह।
फोटो सौजन्यबॉक्स 24 (फ़्लिकर)।
प्रश्न
सुपर यूज़र रीडर IAmJulianAcosta जानना चाहता है कि क्या दो यूएसबी हब कनेक्ट ड्राइव सीधे यूएसबी हब के माध्यम से डेटा स्थानांतरित कर सकते हैं और पूरी तरह से कंप्यूटर को बाईपास कर सकते हैं:
If I connect two USB drives to an external hub and I copy data from one drive to the other, does the data go through the computer or will the USB hub manage the data? Does this have some performance benefit?
एक यूएसबी ड्राइव से दूसरे में कॉपी होने पर डेटा क्या होगा?
उत्तर
सुपरयूसर योगदानकर्ता lzam, लुयू विंन फुक, और fixer1234 हमारे लिए जवाब है। सबसे पहले, lzam:
No, this will not work. All the data you are copying will need to be read by the computer from the source drive before it is copied to the target drive.
If anything, having two hard-drives connected to the same USB hub might slow things down. If you have multiple devices connected to the hub, they have to share the bandwidth.
लुयू विंन फुक के जवाब से पीछा किया:
USB is a host-driven protocol, not a peer-to-peer standard like firewire. Drives are just devices, they are not hosts that control or decide anything. Without the host, they cannot even interact with the outside world.
Assuming that you can connect the two drives like that, how will they know which files and/or folders you want to copy? How will they know which drive to copy from and will they overwrite duplicated files? How will they behave if the drives are full?
और फिक्सर 1234 से हमारा अंतिम जवाब:
A USB hub is just a way to share a connection to the computer when you do not have enough USB ports for all the devices you want to connect. Devices connected to the computer through a USB hub never talk to each other. The USB hub ensures that traffic between the computer and the connected devices goes to and from the right device as if each was literally connected to a USB port on the computer.
There is no performance benefit and there may be a performance detriment. The USB hub itself is connected to the computer through a USB connection, so everything connected to the USB hub has to share the bandwidth of that connection. Hard-drives can consume a lot of the USB hub’s bandwidth and affect the performance of other devices attached to the USB hub. You generally do not want to connect hard-drives through a USB hub at all because of that.
स्पष्टीकरण में जोड़ने के लिए कुछ है? टिप्पणियों में विचार व्यक्त करो। अन्य तकनीक-समझदार स्टैक एक्सचेंज उपयोगकर्ताओं से अधिक उत्तरों पढ़ना चाहते हैं? यहां पूर्ण चर्चा धागा देखें।
