• USB 3.0 Portable Hard Drive
  • Capacities up to 2TB*
  • FIPS PUB 197 certified
  • AES-XTS 256-bit hardware encryption – no software required
  • OS & Platform independent



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  • Overview
  • Features
  • Specifications
  • Reviews
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  • Hard Drive Comparison
  • FAQs

What is diskAshur?

Portable encrypted USB 3.0 Hard Drive with real-time XTS-AES hardware encryption, software free design and super-fast data transfer speeds
Looking for an effortless way to secure your data while taking advantage of the fastest USB 3.0 speeds?
Look no further than the diskAshur, a hardware encrypted portable Hard Drive by iStorage. With an easy-to-use keypad design and software free setup, the iStorage diskAshur enables you to securely access the drive with your own unique PIN on any operating system including embedded systems and now with super-fast data transfer speeds up to 5 Gbps and capacities up to 2TB.

Grade FIPS PUB 197 Validated Encryption Algorithm

Featuring your choice of AES-XTS 128 or 256-bit hardware encryption, the iStorage diskAshur seamlessly encrypts all data on the drive in real-time, keeping your data safe even if the hard drive is removed from its enclosure.

Super fast USB 3.0 connection- data transfer speeds up to 10x faster than USB 2.0

With a super speed USB 3.0 interface, you can now access your files faster than ever before. The iStorage diskAshur is also backwards compatible with USB 2.0 and 1.1 ports.

Software free design- with no admin rights to contend with the iStorage diskAshur is a breeze to implement

With no software installation required for setup or operation and the ability to run on any platform, the iStorage diskAshur provides stress free deployment in corporate environments. The iStorage diskAshur can be configured with independent Admin and User PINs. The Administrator Feature allows enrolment of up to five unique User ID’s and one Administrator. If the user forgets their PIN, the drive can be unlocked using the Admin PIN.

Self-destruct password

The diskAshur has the ability to set a password that will reset the encryption key if needed. By resetting the encryption key all data on the drive will be lost and cannot be recovered.

Drive Reset Feature

The iStorage diskAshur also employs a useful drive reset feature, which can be implemented with a unique command. This clears all PINs and data, and creates a new randomly generated encryption key, enabling the drive to be reset and redeployed as many times as needed.

Auto-lock feature

The unattended iStorage diskAshur can be configured to lock after a pre-determined amount of time of your choosing. Ideal for protecting your data when you’re away from your desk.

Data at rest protection

All data and encryption keys are always encrypted while at rest.

Brute force self destruct feature

The iStorage diskAshur uses a three pronged approach to protect against a Brute Force attack. The first step is to deny access to the drive until the drive can verify the user PIN. After several incorrect attempts the drive will lock itself, requiring the drive to be plugged in again to input a PIN. This feature blocks automated attempts to enter PIN numbers. Lastly, after a predetermined number of failed PIN entries, the diskAshur assumes it is being attacked and will destroy the encryption key and lock itself, rendering the data useless and requiring a total reset to redeploy the diskAshur.

Wear resistant key pad

Designed with protection in mind, the entire iStorage diskAshur family incorporates ‘wear resistant’ keypads to hide key usage and avoid tipping off a potential hacker to the commonly used keys.

VTC technology

Protection against hacker attempts doesn’t stop with Brute Force. Incorporated into the iStorage diskAshur’s electronics is iStorage’s Variable Time Circuit (VTC) technology, working to thwart “timing attacks” aimed at accessing the drive by studying the behaviour and infiltrating the diskAshur’s electronics.

Compact, rugged design- perfect for taking your data on the road

The iStorage diskAshur’s low powered design is perfect for using with notebooks and taking your data on the road. Perfectly pocketable, the diskAshur’s compact, robust design features a 16-point omni-directional shock mounting system and rubberised paint, protecting the drive from drops and knocks. The convenient integrated USB 3.0 cable eliminates the need to carry around cords with you and allows you to be connected at the flick of a fingertip.
  • Secure access with personalised 6-16 digit PIN
  • Integrated USB 3.0 cable - Data transfer speeds up to 5Gbps (10X faster than USB 2.0)
  • Complete security with Real Time 128-bit or 256-bit Military Grade AES Hardware Encryption
  • Encrypts all data on the fly, as fast as any USB3 hard drive
  • When diskAshur is not connected all data is encrypted
  • Easy to install and set up as no software required also NO Admin Rights required
  • Easy to use – simply drag and drop data to the diskAshur or use with any backup software
  • Convenience via integrated USB3 cable
  • BUS powered – no mains power required
  • Robust, portable and compact design with shock mounting to protect from drops
  • Set a self-destruct PIN that when entered deletes all encryption keys and renders all data stored on the drive as inaccessible
  • Administration feature allows 1 Admin and up to 4 user PIN codes
  • Auto-lock Feature – diskAshur can be configured to lock after a pre-determined amount of time of your choosing
  • Compatibility with any OS - Windows, MAC, Linux, Chrome, Android, Thin Clients & Embedded Systems
  • Utilises FIPS PUB 197 validated Encryption Algorithm
  • Brute Force Hack Defence Mechanism
  • VTC Technology
  • Wear resistant key pad
  • Includes free travel pouch
  • Guaranteed with 2 year warranty
Data Transfer Rates USB 3.0 - up to 5 Gbps
Power Supply Bus powered
Interface USB 3.0 - backward compatible with USB 2.0/1.1
Buffer Size 8MB
RPM 5400
Average seek time 12 ms
Shock - non operating 000G 1ms
Shock - operating 300G 2ms
Dimensions & weight 120mm X 84.5mm X 19mm (4.7" X 3.3" X 0.75") weight: 176 grams
Warranty 2 year limited
Approvals FCC & CE
Operating System Compatibility Compatible with all Operating Systems, including Windows, Mac, Linux, Chrome, Android, Thin Clients & Embedded Systems
Ordering Information iStorage Part Number: IS-DG3-128-xxxx (or) IS-DG3-256-xxxx (xxxx=drive size in GBs)
Review: iStorage diskAshur USB 3 256-bit 500 GB Read the online review
iStorage diskAshur Hard Drive Introduction
We strongly recommend that you carefully read the User Manual, shipped with the device and/or available for download on our website before contacting us for technical support.
There are no ‘Back Doors’ to our products, we cannot retrieve a forgotten PIN or retrieve any data off the drives unless the PIN is known.
Below are answers for the most frequently asked questions:
You can use it in one of the following ways:(1) Change the Admin PIN or create a User PIN;

  • Connect the iStorage diskAshur to your computer’s USB port, you will get a solid RED light.
  • Hold down the 0 & Padlock keys for 5 seconds, RED light flashes.
  • Enter the Admin Mode with 123456 & Padlock (default administrator password), the BLUE light then appears signalling the iStorage diskAshur is in Admin mode.
  • You are now able to change the Admin Password or create a User Password in Admin mode.


(2) Directly enter the User Mode to start using the iStorage diskAshur;

  • Connect the iStorage diskAshur to your computer’s USB port, you will get a solid RED light.
  • Enter the Admin code 123456 & Padlock (default administrator password), now GREEN light appears and iStorage diskAshur is ready to use.
Any new Admin or User code that is setup has to be a minimum of 6 digits and be no more than 16 digits long (6-16 digits).
Use your Admin PIN to enter Admin Mode, and then create another User PIN in Admin Mode.
There is no other way to retrieve the Admin PIN except a complete reset of the iStorage diskAshur. After a complete reset, all data will be lost and you will need to initialise, allocate and format the iStorage diskAshur manually. You then will be able to use the default Admin Password 123456.
You need to initialise, allocate and format the diskAshur drive manually. For more information, refer to “Initialising and formatting the Hard Drive after a complete reset” in the product manual.
No, this is a Windows limitation, you must use the Admin account to initialise and format the iStorage diskAshur.
As a full disk encryption product, the iStorage diskAshur can never be used without a password.
The iStorage diskAshur uses either AES 128-bit or AES 256-bit algorithm.
You can change it only in the Admin Mode. In the User Mode, the User PIN which has the same digits is created in the Admin Mode cannot be changed or deleted.
Ensure that you have administrator privileges for your computer. You can use only the administrator account to initialise partition or format the iStorage diskAshur in the User Mode.
The Administrator feature allows enrolment of up to FOUR (4) unique User ID’s and ONE (1) Administrator. If a User forgets their PIN, the diskAshur can be unlocked using the Admin PIN.
No, since the iStorage diskAshur does not require any software to be installed and the encryption/decryption is performed in Hardware on the drive itself, “Admin Rights” are not required.
You may have entered an incorrect PIN too many times and have triggered the Brute Force Attack Protection; you can reset this counter by referring to the `Brute Force Attack Protection` section of the iStorage diskAshur manual.
The issue you are having is being caused by power saving settings on your computer so please see below and make the appropriate changes to your computer and this will stop the iStorage drive from locking.

Microsoft Windows

Doing the following will prevent Windows from switching off the diskAshur, go to `Control Panel` & `Power Options`, the easier option is to disable power saving which means stopping the computer from `Sleeping` see below;
In addition go into Advanced Settings in Power Option to disable the following:

  • Ensure the computer is set to sleep: Never (as above)
  • Turn off hard disk after: 999999 Minutes
  • USB selective suspend setting: Disabled

This will keep any iStorage hard drive connected to the computer continuously on.

Note: For Windows 8.1 users You will need to install a Windows update (KB2919355) as well as follow the steps above. Please go to this link and choose Method 2:
Once the download option appears select KB2919355 and then download and install.

For more detailed information and required fix please go to our support page, under the tab Firmware Updates and download Win8.1 USB suspend issue folder.

Apple Mac

Drives keep locking after 5-10 minutes on the Macs.
This will be due the Mac’s power saving as there is a setting to switch off hard drives that are idle after a fix period of time see below.

The settings in Energy Saver preferences affect what happens when your Mac is left unattended for a period of time that you specify.

Disable Put the hard disk(s) to sleep when possible to prevent the diskAshur going to sleep and not locking. You will also need to stop the computer sleeping to prevent the diskAshur from locking.

The only way to prevent this is by changing the power settings (Windows computers) of the computer so that it only switches of the monitor on hibernation/sleep and keeps power to hard drives and USB. On Apple MAC computers going to the power settings in `System Preferences` and clicking the do not suspend USB will keep the drive alive even if the MAC goes into full hibernation
Your computer may not have enough power going through to the USB to power the iStorage diskAshur. Use the supplied USB Y-Power cable to ensure full power to the iStorage diskAshur.
To make the iStorage diskAshur drives universally compatible with all the most common Operating Systems requires the drive to be formatted using the FAT file system. This is done by using `Disk Management` in Windows, `Disk Utility` on MAC OS/x or MKFS in Linux. in Windows and Disk Utility on MAC OS/x or MKFS in Linux.
BadUSB is a theoretical exploit that was presented by SR Labs at the Black Hat conference in August of 2014. SR Labs demonstrated a vulnerability in one USB device that allowed malicious code to be programmed into the USB controller through a firmware update process.
The attack described is very sophisticated and in the case of iStorage products would require advanced knowledge of our USB controller, a leaked version of our firmware, the programming tool to update our controller, the password used for our programming tool, and an in depth understanding of the device’s functionality, etc.
According to SR Labs, the failsafe method to eliminate this threat is to simply disable the ability to update the controller’s firmware. Many of iStorage devices shipping today, including all of our USB 3.0 security products already have the firmware locked which prevents field updates to the USB controller.
As a continuous improvement, iStorage is locking down the firmware on all USB controllers used in iStorage devices to safeguard against this vulnerability. We recommend checking our website periodically for notices regarding BadUSB and Security Updates.
Your PC has a small bug that is called the USB Selective Suspend.  This error first occurred with Windows 8 and rolled over with Windows 10 and server 2012 R2.  This bug stops the windows update service from fully installing the Vendor ID and Product ID for the iStorage product into the windows registry.  This is vital information for the registry to have and stops the devices from disconnecting after a set amount of time.

We have contacted Microsoft about this matter and they have provided a fix for this issue.  It can be downloaded directly from this link HERE.

Please unzip the contents of this file and extract to your desktop.  Please follow the instructions on page 2 of the PDF

* Some of the listed capacity on a diskAshur HDD drive is used for formatting and other functions and thus is not available for data storage. As such, the actual available capacity for data storage is less than what is listed on the products.