Condusiv Technologies Blog

Condusiv Technologies Blog

Blogging @Condusiv

The Condusiv blog shares insight into the issues surrounding system and application performance—and how I/O optimization software is breaking new ground in solving those issues.

How to Recover Deleted Files from Network Shares

by Dawn Richcreek 17. October 2019 04:09

You may have discovered—and too late—that while you can recover some deleted files from the Windows Recycle Bin on local machines, you cannot recover deleted files (accidentally or otherwise) from network drive shared folders. If you delete a file from a network share, it is gone. If you look in the Recycle Bin, it won’t be there. 

This happens because Windows is organized so that deleted files can be captured by the Windows Recycle bin on local drives only. If a user deletes a file on a server from a network shared folder, it isn’t being deleted from the local machine, so the Recycle Bin does not capture it. This is also true of files deleted from attached or removable drives, and files deleted from applications or the Command Prompt. Only files deleted from File Explorer on a machine’s local drive will be saved by the Recycle Bin.

With some types of software, you might be able to recover an earlier saved version of a file deleted from a network shared folder, which would give you the version prior to the deletion. Failing this, the only other way to recover a file deleted from a network share (without a third-party solution—see below) is to have your system administrator retrieve an earlier saved version of the file from the most recent backup. This will only work if:

 

a) A version of the file was actually backed up

b) You can recall the file name so that the system administrator can find it

c) You can recall with some accuracy the time and date when the file was saved. 

 

This method is, of course, extremely time consuming for the sys admin—and for you, too, if you have to wait. 

Even if the previous version can be retrieved, any work done on the file since the last save is lost forever. 

 

Problem Solved: Undelete

Fortunately, there is a very easy and cost-effective solution to this perpetual issue: Undelete® Instant Data Recovery software from Condusiv. 

1. To permanently solve this problem site-wide, download and install Undelete Server, which is extremely fast and simple, and doesn’t require a reboot to complete the installation (something you really don’t want to have to do on a server running databases or applications requiring constant uptime). 

 

 

2. Following installation, the first thing you’ll notice is that the Windows Recycle Bin has been replaced by the Undelete Recovery Bin. The Recovery Bin will not only capture files deleted from network shares, but also files overwritten on the user’s drive, files deleted between backups, and files deleted from the Command Prompt. 

3. Test it for yourself. Create a test file within a network drive shared folder and delete it. You’ll see that your file has, as you would expect, disappeared from the server as well. 

4. Open the Undelete Recovery Bin. You’ll be able to easily navigate to the shared folder from which you deleted the file—and there you’ll find it again. (if you are not an Admin, see Undelete Client below)

 

 

5. You can then select that file and recover it back to its original location, or even to a new location. 

 

 

 

 6. You’re done! That’s how easy it is.

 

Undelete Client

The above example demonstrates a user opening Undelete Server on the respective server to recover the file. Users, however, may not have access to the server, but a system administrator can certainly log on and open Undelete Server to recover the file. 

However, once Undelete is installed on a system, a user can open Undelete on the remote Network Share, follow the above steps, and view and recover their own files. 

 

Buy Undelete Instant Data Recovery now, and always be able to recover deleted files from network shares. 

 

Purchase Online Now https://www.condusiv.com/purchase/Undelete/

 

Request a Volume Quote https://learn.condusiv.com/Volume-Licensing-Undelete.html

 

Download a Free trial https://learn.condusiv.com/LP-Trialware-Undelete.html

Tags:

Data Recovery

Condusiv’s V-locity Technology Was Recently Certified as Citrix Ready

by Dawn Richcreek 11. September 2019 09:51

 

We are proud to announce that Condusiv’s V-locity® I/O reduction software has been certified as Citrix Ready®. The Citrix Ready program helps customers identify third-party solutions that enhance virtualization, networking and cloud computing solutions from Citrix Systems, Inc. V-locity, our innovative and dynamic alternative to costly hardware overhauls, has completed a rigorous verification process to ensure compatibility with Citrix solutions, providing confidence in joint solution efficiency and value. The Citrix Ready program makes it easy for customers to identify complementary products and results-driven solutions that can enhance Citrix environments and increase productivity.

 

 

 

Verified Performance Improvements of 50 Percent or More

To obtain the Citrix Ready certification, we ran IOMeter benchmark tests—an industry standard tool for testing I/O performance—on a Windows 10 system powered by Citrix’s XenDesktop virtual desktop access (VDA).  

The IOMeter benchmark utility was set up to run 5 different tests with variations in the following parameters:

 •  Different read/write size packets (512b to 64kb)
 •  Different read/write ratios, i.e. 50% read/50% writes, 75% reads/25% writes
 •  Different mixture of random and sequential I/Os

The tests determined that drastic improvements were made with V-locity enabled versus disabled. With V-locity enabled, we found that performance rates improved around 50% on average. In one test case, IOps (I/Os per second) increased from 2,903 to 5,525, a performance rate improvement of 90%.  

 

 

 

 This chart shows the detailed test results of the 5 test variations:  

 

 

 

We also compared the results of the V-locity Dashboard running the same IOMeter benchmark, with V-locity disabled and then enabled and found some additional improvements.

With V-locity enabled, it was able to eliminate over 8 million I/Os from having to go through the network and storage to get satisfied which immensely increased the I/O capacity of the system.  By knowing the latency times of these ‘eliminated’ I/Os, another improvement to highlight is that it saved more than an hour of storage I/O time.   

 

 

 

Additionally, the workload (amount of data read/written) increased from 169GB to 273GB, meaning 60% more work was being done in the same amount of time.  

 

 

 

 

 

Customers can be confident that V-locity has successfully passed an exhaustive series of tests established by Citrix. The V-locity technology works effectively with Citrix solutions and can provide customers with 50% or more faster performance gain on their heaviest workloads. V-locity allows customers to “set it and forget it,” meaning that once it is installed, systems will instantly improve with little to no maintenance.

Our CEO, Jim D’Arezzo noted, “We are proud to partner with Citrix Systems. It’s important to remember that most I/O performance issues are caused by the operating system, particularly in the Windows environment. When compared to a hardware upgrade, the software solutions Condusiv offers are far more effective—both in terms of cost and result—in increasing overall system performance. We offer customers intelligent solutions that now combine our V-locity with Citrix XenDesk. We can’t wait to continue to work with the trusted partners in the Citrix Ready ecosystem.” 

 

Download free 30-day trial of V-locity

 

Condusiv’s V-locity I/O reduction software has been certified as Citrix Ready

 

 

SQL Server Database Performance

by Dawn Richcreek 15. March 2019 07:42

How do I get the most performance from my SQL Server?

SQL Server applications are typically the most I/O intensive applications for any enterprise and thus are prone to suffer performance degradation. Anything a database administrator can do to reduce the amount of I/O necessary to complete a task will increase the server’s performance of the application.

Excess and noisy I/O has typically been found to be the root cause of numerous SQL performance problems such as:SQL Server

  • -SQL query timeouts
  • -SQL crashes
  • -SQL latency
  • -Slow data transfers
  • -Slow or sluggish SQL based-applications
  • -Reports taking too long
  • -Back office batch jobs bleeding over into production hours
  • -User complaints; users having to wait for data

 

Some of the most common actions DBAs often resort to are:

  • -Tuning queries to minimize the amount of data returned.
  • -Adding extra spindles or flash for performance
  • -Increased RAM
  • -Index maintenance to improve read and/or write performance.

 

Most performance degradation is a software problem that can be solved by software

None of these actions will prevent hardware bottlenecks that occur due to the FACT that 30-40% of performance is being robbed by small, fractured, random I/O being generated due to the Windows operating system (that is, any Windows operating system, including Windows 10 or Windows Server 2019).

 

Two Server I/O Inefficiencies



IO StreamAs the storage layer has been logically separated from the compute layer and more systems are being virtualized, Windows handles I/O logically rather than physically which means it breaks down reads and writes to their lowest common denominator, creating tiny, fractured, random I/O that creates a “noisy” environment that becomes even worse in a virtual environment due to the “I/O blender effect”.



IO StreamThis is what a healthy I/O stream SHOULD look like in order to get optimum performance from your hardware infrastructure. With a nice healthy relationship between I/O and data, you get clean contiguous writes and reads with every I/O operation.

 

 

 

 

 

Return Optimum Performance – Solve the Root Cause, Instantly

 

Condusiv®’s patented solutions address root cause performance issues at the point of origin where I/O is created by ensuring large, clean contiguous writes from Windows to eliminate the “death by a thousand cuts” scenario of many small writes and reads that chew up performance. Condusiv solutions electrify performance of windows servers even further with the addition of DRAM caching – using idle, unused DRAM to serve hot reads without creating an issue of memory contention or resource starvation. Condusiv’s “Set It and Forget It” software optimizes both writes and reads to solve your toughest application performance challenges Video: Condusiv I/O Reduction Software Overview.

 

Lab Test Results with V-locity I/O reduction software installed

labtest 

 

Best Practice Tips to Boost SQL Performance with V-locity

 

 

By following the best practices outlined here, users can achieve a 2X or faster boost in MS-SQL performance with Condusiv’s V-locity® I/O reduction software.

-Provision an additional 4-16GB of memory to the SQL Server if you have additional memory to give 

-Cap MS-SQL memory usage, leaving the additional memory for the OS and our software. Note - Condusiv software will leverage whatever is unused by the OS 

-If no additional memory to add, cap SQL memory usage leaving 8GB for the OS and our software Note – This may not achieve 2X gains but will likely boost performance 30-50% as SQL is highly inefficient with its memory usage

-Download and install the software – condusiv.com/try. No SQL code changes needed. No reboot required. Note - Allow 24 hours for algorithms to adjust.

-After a few days in production, pull up the dashboard and look for a 50% reduction in I/O traffic to storage

Note – if offloading less than 50% of I/O traffic, consider adding more memory for the software to leverage and watch the benefit rise on read heavy apps.

Condusiv Introduces Undelete 11, World’s Leading Windows Enterprise Data Protection and Instant Recovery

by Dawn Richcreek 14. January 2019 11:03

Undelete® 11 protects Windows® servers, desktops and laptops from data protection gaps that risk data loss, productivity downtime and money.

 

New Undelete 11, dramatically enhances the capabilities of our industry-leading Undelete series of data protection and recovery software. New functionality in Undelete 11 makes file recovery easier, faster, provides version protection for custom file types as well as cloud support to offer additional protection from security threats like ransomware

 

Undelete Fills Data Protection Gaps

“Help! I just deleted a file from the network drive!” That’s a support call any IT professional knows all too well. “When I hear that organizations are relying only on backups or snapshots or even ‘the cloud’ as a complete data protection solution, I cringe,” says Condusiv CEO James D’Arezzo. “That leaves too many gaps for a modern data center. Undelete fills the gaps and provides a first line of defense since Undelete provides true continuous data protection for easy recovery of individual files. Undelete is tailored for quick recovery of single files that are lost or overwritten.”

 

Traditional data recovery measures such as backups or snapshots, notes D’Arezzo, can require hours to restore a single file, during which time IT personnel are pulled away from more productive activities. Backups, moreover, do not capture changes made since the last backup, so work performed during the time between backups is not recoverable or protected. While snapshots can fill some of these gaps, scheduling constant snapshots and managing space utilization only adds to the system administrator’s workload.

 

Undelete’s Powerful Recovery Bin

With Undelete 11, when a file is deleted—including files deleted or overwritten from shared network folders or deleted by the Windows command prompt—it is automatically captured and stored in the Undelete Recovery Bin. The Server, Professional, and Client editions of Undelete provide access to Recovery Bins on remote computers, allowing IT staff or users (just files they have rights too) to recover deleted files across the network. This makes it unnecessary to search backups or Windows shadow copies when a user accidentally deletes a file from the server. Undelete’s own “Dig Deeper/Emergency Undelete” feature enables the user to search a drive or directory for files that were previously deleted, enabling the restoration of files that were deleted even before Undelete was installed.

 

Undelete Saves the Day

Over 50,000 organizations rely on Undelete for instant file recovery. “We frequently hear customers say, “Undelete Saved the Day!” by being able to recover files they never thought they would be able to get back, and Undelete recovered them instantly,” added D’Arezzo.

 

“Engineers have accidentally deleted very critical files on a network share.  We've been able to quickly find/recover those files.  In addition, the versioning capability has also been very valuable in that we could go back one or two (or more) versions.  It's much better/faster than retrieving from a backup.  Since backups are nightly, the last backup might not even have the file if it were created and deleted on the same day.” Bob Sauers, Senior IT Manager, PCTEST Engineering Laboratory Inc.

 

“We use Undelete so often that almost all of our users know we have it, and count on it, to save them time in recovering files or folders that were accidentally deleted.” John Brigan, Sr Infrastructure Analyst, Marion County Board of County Commissioners

 

“We have a process where our clients 'upload' billing files to us for processing.  Due to PCI compliance we have to receive the file, seamlessly move it to the Secure LAN segment and delete it off the DMZ Web Server.  The successful moving of the file fails when there is a breakdown across the network, for whatever reason, but the Local Delete always works.  So instead of having to call the client and have them re-upload the file, we simply go to Undelete, recover the file and move on.  No company likes to call the customer to ask them to take action to solve an internal technical problem.  Undelete works.” Kem Sisson, President, Money Movers Inc.

 

“Helped us recover CAD files when a large amount was accidentally deleted. Saved us time as we did not have to mount backup drives.” Jeff Hafer, Applications Developer-Systems Administrator, Batesville Tool & Die

 

“We use this tool constantly and has been very vital in several situations where executive staff had been working on a presentation or spreadsheet for an hour or more and somehow deleted it and called our help desk to see if we could recover a file they had just created and accidently deleted it.  The ability to recover that file has been crucial and being able to provide the customer service with immediate results is great.” Steve Lauer, Senior Systems Administrator, Maricopa County Clerk of the Superior Court

 

New Undelete 11 Features

Recovery Bin – Provides complete file protection by capturing all deleted files, including files deleted from network shares, allowing instant recovery with just a few clicks.

(New) New User Interface – Easy to use, simple to navigate and intuitive – Familiar File Explorer-like interface makes finding and recovering deleted files even easier.

Version Protection for Microsoft Office files – Captures old versions of Microsoft Office files allowing recovery on intermediate versions of documents.

(New) Expanded File Version Protection – File versioning has been expanded to include custom file types in addition to Microsoft Office files such as CAD, Photoshop files, PDFs and more. Simply customize what files types you want to apply version protection to in settings.

(New) Enhanced Search Features – Easy to search for deleted files by multiple criteria. One button search wizard. New capabilities include options to search by a date range, deleted by a particular person or from a specific folder.

(New) Faster Search and Recovery – the speed of search and recovery has been improved.

(New) Cloud Support – The Recovery Bin can now be stored in the cloud using OneDrive and other popular file hosting services for additional protection from security threats like ransomware.

(New) Inclusion List – Provides the ability to customize only specific deleted files, folders or file types to be saved by Undelete.

(New) Drag and Drop – Users can drag and drop files from their local Recovery Bin to a local drive. 

Dig Deeper/Emergency Undelete – Recover files deleted before Undelete was installed.

Secure Delete® – In compliance with corporate governance or governmental regulatory requirements for secure data deletion, securely erase files deleted so they are virtually unrecoverable. Using a bit pattern specified by the National Security Agency (NSA) for the Department of Defense, SecureDelete not only deletes a file but overwrites the disk space the file previously occupied making it virtually impossible for anyone to access. This is an important feature to assist with right to be forgotten provisions in regulations, such as in the GDPR. 

Wipe Free Space – Securely erase free space so remnants of data cannot be recovered.

Supports removable disks such as ZIP drives, Flash or Thumb Drives and Memory Cards

(New) Windows Desktops Themes – Your favorite Desktop Theme is now supported in Undelete Professional edition.


 

Available Undelete Editions

Undelete 11 Server – Protects server files, including those deleted by network clients. Manage Undelete Server and Professional on remote systems.

Undelete 11 Desktop Client – Allows a user on connected laptops, workstations and VMs to recover their own files from Undelete Server recovery bins

Undelete 11 Professional – Protects locally stored files and allows files to be recovered from Undelete Server recovery bins

Undelete 11 Home – Provides comprehensive protection of locally stored files

 

Undelete customers with current maintenance contract: Login to you account to access your Undelete 11 software

 

Learn more: Watch Undelete 11 videos

 

Buy Now

 

Tags:

Data Protection | File Protection | File Recovery | General | Undelete

Can you relate? 906 IT Pros Talk About I/O Performance, Application Troubles and More

by Dawn Richcreek 8. January 2019 03:44

We just completed our 5th annual I/O Performance Survey that was conducted with 906 IT Professionals. This is the industry’s largest study of its kind and the research highlights the latest trends in applications that are driving performance demands and how IT Professionals are responding.

I/O Growth Continues to Outpace Expectations

The results show that organizations are struggling to get the full lifecycle from their backend storage as the growth of I/O continues to outpace expectations. The research also shows that IT Pros continue to struggle with user complaints related to sluggish performance from their I/O intensive applications, especially citing MS-SQL applications.

Comprehensive Research Data

The survey consists of 27 detailed questions designed to identify the impact of I/O growth in the modern IT environment. In addition to multiple choice questions, the survey included optional open responses, allowing a respondent to provide commentary on why they selected a particular answer.  All the individual responses have been included to help readers dive deeply on any question. The full report is available at https://learn.condusiv.com/2019-IO-Performance-Study.html

Summary of Key Findings 

1.    I/O Performance is important to IT Pros: The vast majority of IT Pros consider I/O Performance an important part of their job responsibilities. Over a third of these note that growth of I/O from applications is outpacing the useful lifecycle they expect from their underlying storage. 

2.    Application performance is suffering: Half of the IT Pros responsible for I/O performance cite they currently have applications that are tough to support from a systems performance standpoint. The toughest applications stated were: SQL, SAP, Custom/Proprietary apps, Oracle, ERP, Exchange, Database, Data Warehouse, Dynamics, SharePoint, and EMR/EHR. See page 20 for a word cloud graphic. 

3.    SQL is the top troublesome application: The survey confirms that SQL databases are the top business critical application platform and is also the environment that generates the most storage I/O traffic. Nearly a third of the IT Pros responsible for I/O performance state that they are currently experiencing staff/customer complaints due to sluggish applications running on SQL. 

4.    Buying hardware has not solved the performance problems: Nearly three-fourths of IT Pros have added new hardware to improve I/O performance. They have purchased new servers with more cores, new all-flash arrays, new hybrid arrays, server-side SSDs, etc. and yet they still have concerns. In fact, a third have performance concerns that are preventing them from scaling their virtualized infrastructures.  

5.    Still planning to buy hardware: About three-fourths of IT Pros are still planning to continue to invest in hardware to improve I/O performance. 

6.    Lack of awareness: Over half of respondents were unaware of the fact that Windows write inefficiencies generate increasingly smaller writes and reads that dampen performance and that this is a software problem that is not solved by adding new hardware. 

7.    Improve performance via software to avoid expensive hardware purchase: The vast majority of respondents felt it would be urgent/important to improve the performance of their applications via an inexpensive I/O reduction software and avoid an expensive forklift upgrade to their compute, network or storage layers. 

Most Difficult to Support Applications

Below is a word cloud representing hundreds of answers to visually show the application environments IT Pros are having the most trouble to support from a performance standpoint. I think you can see the big ones that pop out!

The full report is available at https://learn.condusiv.com/2019-IO-Performance-Study.html

 

The Simple Software Answer

As much as organizations continue to reactively respond to performance challenges by purchasing expensive new server and storage hardware, our V-locity® I/O reduction software offers a far more efficient path by guaranteeing to solve the toughest application performance challenges on I/O intensive systems like MS-SQL. This means organizations are able to offload 50% of I/O traffic from storage that is nothing but mere noise chewing up IOPS and dampening performance. As soon as we open up 50% of that bandwidth to storage, sluggish performance disappears and now there’s far more storage IOPS to be used for other things.

In just 2 minutes, learn more about how V-locity I/O reduction software eliminates the two big I/O inefficiencies in a virtual environment 2-min Video: Condusiv® I/O Reduction Software Overview

Try it for yourself, download our free 30-day trial – no reboot required

 

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