diskAshur Pro

  • USB 3.0 Portable Hard Drive
  • Capacities up to 2TB*
  • FIPS 140-2 Level 2 inside certified – Cert. No. 1970
  • FIPS 197 PUB Certified
  • XTS-AES 256-bit hardware encryption – no software required
  • OS & Platform independent


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  • Overview
  • Features
  • Specification
  • Reviews
  • Documents
  • Hard Drive Comparison
  • FAQs

What is diskAshur Pro?

Portable hardware encrypted PIN activated USB 3.0 Hard Drive 
Looking for the highest level of security for your data while utilising the fastest USB 3.0 speeds?
Look no further than the iStorage diskAshur Pro, certified and tested to NIST FIPS 140-2 Level 2 requirements(certificate no.1970). Sporting an easy-to-use keypad design that is impervious to dust and grit, a software free setup and operation, the diskAshur Pro enables you to access the drive simply and easily with your own unique PIN and with a super-fast integrated USB 3.0 cable, you can access your data faster than ever before!

FIPS 140-2 Level 2 inside Certified

The iStorage diskAshur Pro certification is the cryptography standard required by the US federal government for protection of sensitive data. It covers 11 areas of its cryptographic security system, including physical security, cryptographic key management and design integrity.

Military Grade Encryption

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

Software Free Design

With no admin rights to contend with the diskAshur Pro is a breeze to implement: Setup takes just minutes. With no software installation required for setup or operation and the ability to run on any platform, the diskAshur Pro provides stress free deployment in corporate environments. Its Administrator feature allows enrolment of up to five unique user ID’s and one administrator, making it a useful business collaboration tool.

Data at Rest Protection

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

Drive Reset Feature

The diskAshur Pro 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 and Self Destruct PIN

With the diskAshur Pro you can set the unattended drive to lock after a pre-determined amount of time. In addition you can pre-program your own unique Self Destruct PIN which, once implemented, instantly destroys all PINs, data and creates a new encryption key.

Brute Force Protection

The diskAshur Pro 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 Pro 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 drive.

Wear Resistant Key Pad

Water & Dust Resistant: Designed with protection in mind, the diskAshur Pro’s ‘wear resistant’ keypad and case is impervious to dust, grit and water, and hides key usage to avoid tipping off a potential hacker to commonly used keys.

Integrated USB 3.0 Cable

Never forget your cables again. Connect the drive at the flick of a fingertip.
  • FIPS 140-2 Level 2 inside certified - Cert. No. 1970
  • Secure access with personalised 7-16 digit PIN. With the addition of a new “Shift” Key, the diskAshur Pro is able to exponentially increase the number of possible PIN combinations, making access to your data even more secure
  • Integrated USB 3.0 cable - Data transfer speeds up to 5Gbps (10X faster than USB 2.0)
  • Complete security with Real Time 256-bit Military Grade XTS-AES Hardware Encryption. Encrypts 100% of your data in real-time and keeps your data safe even if the hard drive is removed from the enclosure
  • Encrypts all data on the fly, as fast as any USB 3.0 hard drive
  • When diskAshur Pro 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 USB 3.0 cable
  • BUS powered – no mains power required
  • Guaranteed with 2 year warranty
  • Brute Force Hack Defence Mechanism
  • The diskAshur Pro enables you to program a unique Self Destruct PIN, which when implemented instantly destroys all PINs, data and creates a new encryption key.
  • Administration feature allows 1 Admin and up to 4 user PIN codes
  • Auto-lock Feature – diskAshur Pro 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
  • FIPS PUB 197 validated Encryption Algorithm
  • Robust, portable and compact design with shock mounting to protect from drops
  • VTC Technology
  • The diskAshur Pro keypad and case is impervious to dust, grit and water
  • Includes free travel pouch
Data Transfer Rate USB 3.0 - up to 5Gbps
Power Supply Bus powered
Buffer Size 8MB
Interface USB 3.0 - Backward compatible with USB 2.0/1.1
RPM 5400 RPM
Average seek time 12 ms
Shock 1000G 1ms (non-operating) | 300G 2ms (operating)
Dimensions & weight 120mm X 84.5mm X 19mm (4.7” X 3.3” X 0.75”); Weight: 190 grams
Warranty 2 years limited
Approvals NIST FIPS 140-2 Level 2 Certified, FIPS PUB 197 Validated, FCC & CE, Water & Dust Resistant
Operating System Compatibility Windows, Mac, Linux, Chrome, Android, Thin Clients & Embedded Systems
Ordering Information iStorage Part Number: IS-DP3-256-xxxxF (xxxx=drive size in GBs & F=FIPS Certified)
*One gigabyte (GB) = one billion bytes; accessible capacity will be less and actual capacity depends on the operating environment and formatting.
Top Review
Top review reviewed the diskAshur Pro. Read the full review
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:
The iStorage diskAshur Pro comes without any default PIN’s and so needs to have an Admin PIN setup before 1st use as below:

  • Connect the iStorage diskAshur Pro to your computer’s USB port, you will get a solid BLUE and GREEN light
  • Press UNLOCK + 9. The LED will change to solid BLUE and Blinking GREEN.
  • Enter the new Admin PIN and press UNLOCK key. If accepted the GREEN LED will flash for 3 short blinks, then return to solid BLUE and blinking GREEN.
  • Re-enter the Admin PIN and press the UNLOCK key. If accepted the GREEN LED will be solid for 3 seconds. LED will then turn BLUE and remain in Admin mode for 30 seconds or if the LOCK key is pressed and then will return the drive to a standby state.
  • The Admin PIN is now set and will allow access to the drive or the Admin features
  • To UNLOCK the drive to use it, exit Admin by pressing the LOCK button. Then enter the new PIN and press UNLOCK
Any new Admin or User code that is setup has to be a minimum of 7 digits and be no more than 16 digits long (7-16 digits).
You have to go into Admin mode so follow the steps below:

  • Enter the Admin Mode (UNLOCK + 0 for five seconds. Enter Admin PIN and press UNLOCK)
  • Press and hold UNLOCK + 1 until the LED turns to solid BLUE and blinking GREEN.
  • Enter a User PIN and press UNLOCK (a minimum of 7 digits and a maximum of 16 digits).
  • The LED flashes GREEN three times, and then returns to solid BLUE and blinking GREEN.
  • Re-enter the new User PIN and press UNLOCK.
  • If the LED stays solid GREEN for two seconds and then solid BLUE, the User PIN was successfully added.


There is no other way to retrieve the Admin PIN except a complete reset of the iStorage diskAshur Pro. After a complete reset, all data will be lost and you will need to initialise, allocate and format the iStorage diskAshur Pro manually. You then will need to setup an Admin PIN again as was done when first using the iStorage diskAshur Pro from new.
You need to initialise, allocate and format the diskAshur Pro manually. For more information, refer to “Initialising and formatting the Hard Drive after a complete reset” in the manual.
No, this is a Windows limitation, you must use the Admin account to initialise and format the iStorage diskAshur Pro.
As a full disk encryption product, the iStorage diskAshur Pro can never be used without a password.
The iStorage diskAshur Pro uses 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 Pro 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 Pro can be unlocked using the Admin PIN.
No, since the iStorage diskAshur Pro 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 Pro 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 diskashur Pro from locking.

Microsoft Windows

Doing the following will prevent Windows from switching off the diskAshur Pro, 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: http://support.microsoft.com/kb/2919355.
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 Pro going to sleep and not locking. You will also need to stop the computer sleeping to prevent the diskAshur Pro 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 Pro. Use a USB Y-Power cable to ensure full power to the iStorage diskAshur Pro.
To make the iStorage diskAshur Pro 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 PRO 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.