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About Partition Misalignment Challenges
  • Degradation of disk subsystems due to redundant read/write operations
  • The negative effect aggravates when virtual containers and the host have both misaligned partitions
  • Critical for disk arrays, virtual drives, solid state drives (SSD) ,advanced format drives (AFD)
  • Shorter lifespan for SSD

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About Paragon's Partition Alignment Technology (PAT)
  • The one that does alignments at one go
  • The fastest engine on the market
  • Guarantees safety for OS and data
  • Does background alignment of locked data partitions
  • Supports all modern storage devices, including ultra-high capacity hard disks 
  • Can be easily integrated to production cycles of any complexity

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Products including Paragon's PAT Technology

Comparing PAT Family Products

  

Feature

Description

PAT 4.0

PAT CLI

(Command Line Interface)

PAT for Virtual Machines
PAT Enterprise

SSE

(Scriptable Staging Edition)
HotPAT

Alignment of Physical Disks
or Virtual Disks From Inside Guest OS

 

 

   

 

On-site alignments

You manually configure and then initiate alignments on every machine

yes

yes

  yes   n/a

yes

Remote alignments

Using a console you pick machines on the net, thus adding them to the infrastructure (misaligned partitions are determined automatically). Then you create alignment and notification policies – alignments will be done according to your demands by a special agent on-site

no

no

  no  n/a

yes

Zero-install alignments

You don’t need to install software to do alignments. You can use our bootable media for that

no

yes

(in WinPE)

  no  n/a

no

Post-deploy alignments

You can initiate disk alignments on a target machine after Windows OS deployment is over as one of the post-config options

no

yes

  no  n/a

no

Resume incomplete alignments

You can resume interrupted alignments caused by an OS failure, restart or a power outage by using our bootable media, thus recovering corrupted partitions

yes

no

  no  n/a

yes

(optional)

Schedule alignments

You can create a timetable for alignments to execute them later

no

yes

(in Windows Scheduler)

yes

(in Windows Scheduler)

n/a

yes

Downtime when aligning system partitions

When aligning a system partition from Windows OS, the system will be restarted to a special boot-time mode to accomplish the operation, which may take from half an hour to several hours (depends on the amount of data and hardware performance)

yes

yes

  yes  n/a

yes

Downtime when aligning data partitions

For all editions but HotPAT: When aligning a data partition with open (in-use) files, the system will also be restarted to a special boot-time mode to accomplish the operation. If a data partition doesn’t have in-use files, the system won’t be restarted, but this partition will be inaccessible till the alignment is over. HotPAT requires one fast restart, then you continue working as usual, while alignments are being done in the background

yes

yes

  no 

(minimal)

n/a

yes

Selective alignments

One machine can have several disks, each with several partitions – those that support this feature enable to pinpoint one or several disks or even one or several partitions of a certain disk that belong to a particular machine and do alignments selectively

yes(partitions, disks)

yes(partitions, disks)

  yes (partitions, disks)

n/a

no

(only machine)

Check FS and Data Loss Protection options

Several levels of data safety from outer failures (power outage, etc.) to specify the acceptable balance between performance and potential data loss

yes

no

  no  n/a

no

Alignment of Virtual Disks from Outside

         

General Features

 

 

   

 

Schedule alignments

You can create a timetable for alignments to execute them later n/a n/a  n/a      yes  yes

Scripting alignments

You can create a script that contains all your actions to execute alignments later

n/a

n/a

n/a   yes 

no

Selective alignments

One machine can have several disks, each with several partitions – those that support this feature enable to pinpoint one or several disks or even one or several partitions of a certain disk that belong to a particular machine and do alignments selectively

n/a

n/a

n/a

  yes 

(partitions, disks)

no

(only machine)

In-place alignment

No additional storage space as well as migration or post-operation synchronization for alignments is required

n/a

n/a

n/a   yes 

yes

Downtime during alignments

Always, for drives of a virtual machine can only be aligned when the machine is off

n/a

n/a

n/a   yes 

yes

Direct Access to Virtual Drives

 

 

   

 

On-site alignments

You can browse a machine where you install the software for supported virtual hard drives and do alignments by connecting them

n/a

n/a

n/a   yes 

n/a

Resume incomplete alignments

You can resume interrupted alignments caused by an OS failure, restart or a power outage by connecting failed virtual drives once again, thus recovering corrupted partitions

n/a

n/a

n/a   yes 

n/a

Check FS and Data Loss Protection options

Several levels of data safety from outer failures (power outage, etc.) to specify the acceptable balance between performance and potential data loss

n/a

n/a

n/a   yes 

n/a

Through VMware Infrastructure

 

 

   

 

Agentless alignments

You pick a Windows OS guest of a VMware ESX host that has access to datastores with virtual drives you’re planning to align. This machine will act as an entry point to the ESX infrastructure. Then you pick any other guest machines to check for misaligned partitions and do alignments if necessary without installing any software to the target virtual machines

n/a

n/a

n/a   yes 

yes

Deferred alignments

Drives of a Windows OS environment hosted by ESX can only be aligned when the virtual machine is off. You can postpone alignments till the target machine has been shut down

n/a

n/a

n/a   no 

yes

Fast check for misaligned partitions

Virtual drives that require alignment are determined in a couple of minutes through the VMware snapshot mechanism

n/a

n/a

n/a   no 

yes

VMware API utilization

Use of VMware API allows much higher performance, efficiency and stability

n/a

n/a

n/a   no 

yes

Support for VMware CBT (Changed Block Tracking)

Allows to do alignments smoothly with no data loss

n/a

n/a

n/a   yes 

yes

Supported Hypervisors

 

 

   

 

ESX 4.x, ESXi 4.x, ESXi 5.x, vSphere

n/a   n/a n/a   yes  yes

Microsoft Hyper-V R1/R2

n/a

n/a

n/a   yes 

no

Supported Virtual Hard Drive Types

 

 

   

 

VMware - Virtual Machine Disk Format (VMDK)   n/a   n/a n/a   yes   yes

Microsoft - Virtual Hard Disk (VHD)

n/a

n/a

n/a   yes 

no

Oracle - Virtual Desktop Image (VDI)

n/a

n/a

n/a   yes 

no

Supported File Systems

 

 

   

 

FAT 12/16/32   yes    yes    yes    yes    yes 
NTFS up to v. 3.1   yes    yes    yes    yes    yes 
Ext2/3/4 FS

on demand

 on demand

 on demand

  yes 

on demand

HFS/HFS+

on demand

on demand

 on demand

 on demand

on demand

Supported Storages

 

 

   

 

Parallel ATA (IDE), Serial ATA (SATA), SCSI, SSD (Solid State Drives), AFD (Advanced Format Drive), iSCSI, IEEE 1394 (FireWire), USB 1.0/2.0/3.0

yes

yes

  yes    yes 

yes

Supported Operating Systems

 

 

   

 

Windows XP   yes    yes    yes 

  yes

(XP SP3)

  yes

(XP SP3)

Windows Vista, Windows 7   yes    yes    yes    yes    yes 
Windows 2003/2008 Server Family   yes    yes    yes    yes    yes 
Windows 2003/2008/2011 Small Business Server   yes    yes    yes    yes    yes 

Windows 8

yes

no

  no    no 

no

Windows Server 2012

yes

no

  no    no 

no

 

 
  Please don't hesitate to contact us to know more about Paragon's PAT technology:

icoPhone    US: 1-888-347-5462
   UK: 44-800-047-0957
  Others: 49-(0)-761-59018-201


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