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Tom.Wegener (talk | contribs) (Added sftp to the storage documentation) |
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If an '''unformatted disk''' or a disk with an '''incompatible file system''' is attached, it will show up on the Storage page where it can be formatted using the '''Format button''' displayed next to the device's type and size. After formatting the disk, it will be automatically activated for use as storage device. | If an '''unformatted disk''' or a disk with an '''incompatible file system''' is attached, it will show up on the Storage page where it can be formatted using the '''Format button''' displayed next to the device's type and size. After formatting the disk, it will be automatically activated for use as storage device. | ||
===Encryption=== | |||
The Allegro Network Multimeter uses an '''AES256 LUKS encryption container''' for encrypted single shared ring buffers. You can connect and mount the encrypted disk with many Linux Distributions. It will ask for your password to mount the container. The Allegro Network Multimeter uses hardware encryption if available. The Allegro 200 does not have HW encryption support and can encrypt up to 400MBit/s in software. All other Allegro devices can encrypt with 2GB/s by using the built-in hardware encryption. | |||
The Allegro Network Multimeter does ''not'' store the password of the encrypted device on the disk. you need to re-enter the password if you unmount, reboot or power-off the Allegro Network Multimeter. | |||
The encryption is not available for the cluster ring buffer. | |||
To encrypt a storage device with AES256 disk encryption, (re)format the disk and enable the AES256 disk encryption option in the on-screen menu: | |||
[[File:Disk formatting and encryption.png|700x700px]] | [[File:Disk formatting and encryption.png|700x700px]] | ||
====Random, device specific passwords==== | |||
Since firmware version 3.4 it is possible to use a randomly generated password for the encrypted storage device. When used, the storage can be activated and deactivated without entering the password. Also, the storage device is automatically activated on system start/restart. The password is stored encrypted on the device and cannot be moved a different device. The password is also deleted on a configuration reset of the Allegro Network Multimeter. Since the password is stored on the Allegro Network Multimeter, the storage device cannot be used on a different Allegro Network Multimeter without reformatting. When the key is removed (on configuration reset or reformat), it cannot be restored! | |||
=== Deactivation === | |||
If an active storage device is to be disconnected from the Allegro Network Multimeter, the deactivate button on the storage page can be used to deactivate the storage device. | If an active storage device is to be disconnected from the Allegro Network Multimeter, the deactivate button on the storage page can be used to deactivate the storage device. | ||
The page will then show that the respective storage device has become | The page will then show that the respective storage device has become inactive. Now, the device can be disconnected safely. | ||
== Secure erase == | == Secure erase == | ||