Data Recovery Best Practices for NAS Promise SmartStor NS4600 RAID Array Failures

Contents

• Why can’t ordinary software tools restore files from RAID?
• How to take hard disks out of the NAS and connect them to a PC?
  • Restoring data with Hetman RAID Recovery
  • Safe recovery from disk images
  • Where are user’s files stored?
  • Comparison of software for RAID recovery

Why can’t ordinary software tools restore files from RAID?

Conventional hard disks keep user’s data by writing it to their surface in a consecutive way, and this is how an entire file is stored on a single hard disk. However, when data is written to a RAID system, a file is divided into several parts. Then these parts are written consecutively to all hard disks within such array. The size of such parts may range from 2 KB to 2 MB, so each file is stored on several hard disks at the same time.

Such approach helps to speed up read and write operations, and it is evident that saving two parts of a file having the size of 1 GB to two hard disks simultaneously is much faster than saving the same 1 GB of data to one hard disk. However, this peculiarity makes file recovery more complicated.

Various RAID levels store information in different ways. Additionally, manufacturers like Promise also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

Are there any specific industry regulations or compliance requirements to consider when securing data on NAS Promise SmartStor NS4600 devices?

Yes, there are several industry regulations and compliance requirements to consider when securing data on NAS Promise SmartStor NS4600 devices. Some of the key regulations and requirements include:

1. General Data Protection Regulation (GDPR): If you are dealing with personal data of European Union (EU) citizens, you need to ensure compliance with GDPR. This regulation lays out specific requirements for the protection of personal data, including encryption, access controls, and data breach notification.
2. Health Insurance Portability and Accountability Act (HIPAA): If you are storing or processing protected health information (PHI), you must comply with HIPAA regulations. This includes implementing appropriate safeguards to protect the confidentiality, integrity, and availability of PHI.
3. Payment Card Industry Data Security Standard (PCI DSS): If you store, process, or transmit credit card information, you must comply with PCI DSS. This standard includes requirements for secure storage of cardholder data, encryption, access controls, and regular security assessments.
4. Sarbanes-Oxley Act (SOX): If your organization is publicly traded in the United States, you need to comply with SOX regulations. This includes ensuring the integrity and confidentiality of financial data and implementing appropriate controls to protect against unauthorized access.
5. California Consumer Privacy Act (CCPA): If you handle the personal information of California residents, you need to comply with CCPA. This regulation grants specific privacy rights to California consumers and imposes obligations on businesses to protect personal information.

In addition to these specific regulations, it is also important to consider other industry-specific regulations and best practices that may apply to your organization, such as the Financial Industry Regulatory Authority (FINRA) rules for financial institutions or the Family Educational Rights and Privacy Act (FERPA) for educational institutions. It is recommended to consult with legal and compliance professionals to ensure full compliance with applicable regulations.

How to take hard disks out of the NAS and connect them to a PC?

Although NAS SmartStor NS4600 can be accessed over the network, you still need to take the hard disks out of the storage device and connect them to a Windows computer. Only in this case will the software be able to scan them properly. Here is what you should do:

1. Turn off the storage and disconnect it from the power supply.

   WARNING! Before you start taking hard disks out of your NAS device, read the manual carefully. Incorrect actions may damage your network-attached storage and/or the hard disks within the RAID system.

2. Take the hard disks out of the NAS one by one, carefully removing them from their slots. Remember that the disks are extremely vulnerable: hitting or dropping them may result in serious physical damage.

3. Make sure to mark each hard disk in accordance with how they were installed inside the NAS.

4. Remove the hard disks and connect them to the computer. In this video, we have explored what ports are used to connect hard disks, and what to do if there are not enough ports or connectors.

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   How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Promise SmartStor NS4600. The hard disks that make up the RAID contain technical information about the algorithm used to save files. When launched, Hetman RAID Recovery reads this information and puts the damaged array together. Then you can open the disk and save your files. Also, you can recover the files accidentally deleted from the network drive.

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How to recover data from a Promise

SmartStor NS4600 has 4 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• RAID 1E;
• RAID 3;
• RAID 5;
• RAID 6;
• JBOD;

NAS supports:

• exFAT, VFAT, FAT 12 / 16 / 32;
• NTFS / ReFS;
• APFS / HFS+;
• Ext2 / 3 / 4 / ReiserFS / XFS / UFS / ZFS / Btrfs;
• VMFS / HikvisionFS;

Safe recovery from disk images

This utility lets you save an entire copy of the disk to file and then work with this image instead of the actual disk. Such feature helps to protect data on the disk from:

• Overwriting during the recovery process;
• Loss resulting from bad sectors;
• User mistakes.

To create an image, do the following:

1. Make sure that you have enough free space to save the image. The image file size usually equals the disk size.

2. Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.

3. When the image creation wizard starts, you can choose to save the entire disk or select only a part of it. Specify the parameters and click Next.

   

4. At this stage, you need to choose a directory where to save the image. Choose any disk connected to this PC, or save the image by FTP.

   

Where are user’s files stored?

The Promise SmartStor NS4600 network-attached storage keeps OS Linux operating system files on a separate RAID 1 (mirrored) array. Usually, all NAS systems create several volumes on every hard disk, and the first of them takes up to 2 Gb of space. This is where operating system files are stored. Other volumes are united into a RAID array where user’s data is written.

Comparison of software for RAID recovery