Showing posts with label raid6. Show all posts
Showing posts with label raid6. Show all posts

Monday, December 14, 2015

Software update: version 5.18.5 released.

Latest software modifications (versions 5.18.2-5.18.5) were addressed to tune the software and fix software problems in certain scenarios. Among recent modifications are:
  • In RAID Builder: parameters for RAID6 Compact Left Symmetric rotation are now default to ARECA RAID controller;
  • In RAID detection tool: support of mdadm metadata at non-standard offsets;
  • In GPT: better support of disks with 4K sectors.
Among problem fixes:
  • Fixed RAID builder GUI in part of RAID6 advanced settings (when doing recovery with two missing drives);
  • Fixed issues with GPT module when partition address is incorrect;
  • Fixed "missing symbols" issue for extended Unicode;
  • Fixed issue with detection of current file system type after format of ExFAT to FAT32.

Tuesday, August 12, 2014

Major update: version 5.16

Starting from version 5.16 the software now preserves file creation and file modification dates from original file system as well as from virtually reconstructed file system after data recovery scan.
These dates also appeared in file system object properties dialog as object attributes.
 
In Professional Recovery software edition there are implemented as standard few additional RAID configurations:
 

RAID 1E - "shifted stripe" configuration

 
 
1. Sample of RAID 1E pattern with "shifted stripe" on 5 disks

 
This configuration has 1 drive of guaranteed redundancy and can be built using 3 disks and more.
 
 
RAID 1E - "running mirror" configuration
 
 
2. Sample of RAID 1E pattern with "running mirror" on 5 disks
 


The configuration has the same properties like RAID 1E "shifted stripe", however has different data allocation strategy. For even number of drives the configuration can be considered as similar to RAID 10 by structure and properties.
 

RAID 6 with compact right-asymmetric parity rotation

 

3. Sample of RAID 6 with compact right-asymmetric rotation on 5 disks
 
This configuration is now supported with both P->Q and Q->P redundancy order and different kinds of indexes assignment for Reed-Solomon code for data recovery with 2 missing drives.
 
Among other useful features there are:
  • Support of "capitalization" attribute for 8.3 DOS file names;
  • In-place editor for RAID Definition Language (RDL) in UFS Explorer Professional Recovery.
 
This update is considered as recommended for data recovery and forensics specialists