Does the portable HDD work just by power supply from a smartphone?

　In the past, I wrote that the press conference was recorded in Huawei P30 in this corner, but what I am worried about while continuing to do it is the free space of the storage.

Serialization Everyone's mobile phone by Masahiro Sano

"Ultra wide -angle camera" and "camera shake correction" are very active in recording of press conference

　Certainly, the "HUAWEI P30" has a relatively room for 128GB of the built -in storage, but the video of the video is reduced by one shoot, so if you record it many times, there is a storage space in the storage.It will be severe.Of course, it is possible to increase the storage using an NM card, but NM cards have fewer options compared to microSD, and they are not very good in terms of price.

　So, I decided to move the video on the main unit to somewhere and open the storage, but the NAS used for work is not much enough, and it seems that it will be full as soon as I put the video.On the other hand, I did not subscribe to a large -capacity cloud enough to save videos, so I thought about preparing a small portable HDD separately and connecting a smartphone to transfer video data.

　However, I was worried about power supply.Portable HDDs that emphasize smaller and portableity are generally supplied from USB terminals, but that is to connect them to a computer or TV that can afford power supply.Because we are assumed.Is it possible to operate the HDD that will eat power compared to USB memory, etc., just by supply from a smartphone?That is a concern.

　However, I couldn't help thinking about it, so I decided to buy a buffalo portable HDD and actually recognize it only by power supply from a smartphone.I chose a buffalo one because the AC adapter was provided separately as an option, and if it did not work due to lack of power, I would use it.

左がバッファロー製のポータブルHDD。HUAWEI P30と比べると厚みはあるものの、サイズ感は近く非常にコンパクトで、容量は余裕を持って2TBのものを購入してみた

　First of all, as a preparation, the HDD is connected to a computer once to make it easy to use with a smartphone and formatted in EXFAT format.After that, I connected the OTG cable to the "HUAWEI P30" and connected it to the HDD using the attached USB cable.

実際にHUAWEI P30とHDDを接続したところ。USB Type-CのOTGケーブルと、HDD付属のUSBケーブルをつなぐだけと非常にシンプルな構成だ

　Then ... the lamp of the HDD will shine and it will recognize it properly! Of course, you can browse files in the HDD with the standard "file" app, or copy and play videos.。It seems that it can be used as an HDD without any problems.

HUAWEI P30の「ファイル」アプリを起動すると、「BUFFALO製USBドライブ」としてHDDを認識していることが分かる

　Of course, any portable HDD will not be able to recognize well, and the load may be insufficient due to an increase in the load for some reason, and the operation may be unstable, so you can always guarantee the operation.It is not a reason.

▲もちろん、HDDに移した動画をスマートフォンから再生することも可能だ

　However, it is also certain that the portable HDD can be operated only by power supply from the smartphone, so I would like to keep using it for a while as a backup of the video that is the original purpose, while also serving as a driving verification.