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.

Help! I hit “Save” instead of “Save As”!!

by Gary Quan 19. June 2018 06:30

Need to get back to a previous version of a Microsoft Office file before the changes you just made?  Undelete has you covered with its Versioning feature.

Have you or your users ever made some changes to a Word document, Excel spreadsheet, or a PowerPoint presentation, saved it and then realized later that what was saved did not contain the previous work? For example, and a true story, a CEO was working on a PowerPoint file he needed for a Board of Directors presentation that afternoon. He had worked about 4 hours that morning making changes and he was careful to periodically save the changes as he worked. The trouble was the last changes he saved had a large part of his previous changes accidentally overwritten.  The CEO then panicked as he just lost a majority of the 4 hours of work he just put in and was not sure he could redo it in time for his presentation deadline. He immediately called up his IT Manager who indicated the nightly backups would not help as they would not contain any of the changes he made that morning. The IT Manager then remembered he had Undelete installed on this file server. This was mainly to recover accidentally deleted files, but he recalled a Versioning feature that would allow recovery of previous versions of Microsoft Office files. He was then able use Undelete to retrieve the previous version of the CEO’s PowerPoint presentation and recover the work he did that morning. The CEO was extremely happy, and the IT Manager was a ‘hero’ to the CEO!

Another very common scenario is users making edits to original files and then selecting “Save” instead of “Save As” and then the original files are now gone. As an example, a customer had a budget file in Excel and several people had accessed it throughout the day. At some point, someone had inadvertently made multiple changes to it for his department, including deleting sections that were not relevant to his department all the while thinking he was working in his own Save-As copy. Boy, were the other department heads upset! The way our IT Admin customer tells the story it sounded like a riot was about to erupt! Well, he swoops in just in time and recovers the earlier version in minutes and saves the day. We hear stories daily about Word document overwrites that IT Admins are able to recover the previous versions of in just a few minutes, saving users hours of having to recreate their work.

While the most popular functionality of Undelete is the ability to recover accidentally deleted files instantly with the click of a mouse, the Undelete Versioning feature is certainly the runner up, so we wanted to remind users, or prospective users, that it’s also here to save the day for you, too.

The Undelete Versioning feature will automatically save the previous versions of specific file types, including Microsoft Office files. The default is to save the last 5 versions, but this is settable.  Undelete then allows you to see what and when versions were saved and are then easily recoverable. A vital data protection feature to have.

If you already have Undelete Server installed on your file servers, check out the Versioning feature. If you have any of your own “hero” stories you would like to share, email custinfo@condusiv.com

If you don’t have Undelete Server or Undelete Pro yet, you can purchase them from your favorite online reseller or you can buy online from our store http://www.condusiv.com/purchase/Undelete/

 

Tags:

Data Protection | Data Recovery | File Recovery | General | Success Stories | Undelete

University of Illinois Doubles SQL and Oracle Performance on All-Flash Arrays with V-locity® I/O Reduction Software

by Brian Morin 19. May 2017 11:00

The University of Illinois, had already deployed an all-flash Dell Compellent storage array to support their hardest hitting application, AssetWorks AiM, that runs on Oracle. After a year in service, performance began to erode due to growth in users and overall workload. Other hard hitting MS-SQL applications supported by hybrid arrays were suffering performance degradation as well.

The one common denominator is that all these applications ran on Windows servers – Windows Server 2012R2.

“As we learned through this exercise with Condusiv’s V-locity I/O reduction software, we were getting hit really hard by thousands of excessively small, tiny writes and reads that dampened performance significantly,” said Greg Landes, Manager of Systems Services. “Everything was just slower due to Windows Server write inefficiencies that break writes down to be much smaller than they need to be, and forces the all-flash SAN to process far more I/O operations than necessary for any given workload.”

Landes continued, “When you have a dump truck but are only filling it a shovelful at a time before sending it on, you’re not getting near the payload you should get with each trip. That’s the exact effect we were getting with a surplus of unnecessarily small, fractured writes and subsequent reads, and it was really hurting our storage performance, even though we had a really fast ‘dump truck.’ We had no idea how much this was hurting us until we tried V-locity to address the root-cause problem to get more payload with every write. When you no longer have to process three small, fractured writes for something that only needs one write and a single I/O operation, everything is just faster.”

When testing the before-and-after effect on their production system, Greg and his team first measured without V-locity. It took 4 hours and 3 minutes to process 1.57TB of data, requiring 13,910,568 I/O operations from storage. After V-locity, the same system processed 2.1TB of data in 1 hour and 6 minutes, while only needing to process 2,702,479 I/O operations from underlying storage. “We processed half a terabyte more in a quarter of the time,” said Landes.

“Not only did V-locity dramatically help our write-heavy MS-SQL and Oracle Servers by increasing performance 50–100% on several workloads, we saw even bigger gains on our read heavy applications that could take advantage of V-locity’s patented DRAM caching engine, that put our idle, unused memory to good use. Since we had provisioned adequate memory for these I/O-intensive systems, we were well positioned to get the most from V-locity.”

“We thought we were getting the most performance possible from our systems, but it wasn’t until we used V-locity that we realized how inefficient these systems really are if you’re not addressing the root cause performance issues related to the I/O profile from Windows servers. By solving the issue of small, fractured, random I/O, we’ve been able to increase the efficiency of our infrastructure and, ultimately, our people,” said Landes.

Tags:

General | SAN | Success Stories | virtualization | V-Locity | Windows Server 2012

SQL Batch Job Hell

by Brian Morin 1. October 2014 04:16

ASL was in SQL batch job hell.

A regular import of 150 million records into their SQL database would take 27 hours to complete.

ASL’s account team and clients needed access to the most current data immediately, but the 27 hour batch job meant that access would slip a full day of production or even two. That wasn’t acceptable as some clients would hold back business while waiting on new data to come online.

“Typically, IT professionals respond to application performance issues by reactively buying more hardware. Without the luxury of a padded budget, we needed to find a way to improve performance on the hardware infrastructure we already have,” said Ralph Ortiz, IT Manager, ASL Marketing.

ASL upgraded their network to 10GbE and was looking at either a heavy investment in SSD or doing a full rip-and-replace of the SAN architecture before its full lifecycle. Since that kind of hardware investment wasn’t in the budget, they decided to take a look at V-locity® I/O reduction software.

“I was very doubtful that V-locity could improve my I/O performance through a software-only solution. But with nothing to lose, we evaluated V-locity on our SQL servers and were amazed to see that, literally overnight, we doubled throughput from server to storage and cut our SQL batch job times in half,” said Ortiz.

After deploying V-locity, SQL batch jobs that used to take 27 hours to complete now take 12–14 hours to complete. The weekly college database import that used to take 17 hours to complete is now down to 7 hours.

Read the full case study – ASL Doubles Throughput with V-locity I/O Reduction Software

The Student Enrollment Blues

by Scott Thomas 21. January 2014 06:58

It was a bad day for Steve Bettoni, Tech Support and IT Procurement Officer of Stockport College. Steve is responsible for the infrastructure that supports the college's enrollment apps, SAP, and Exchange, so you can imagine his level of anxiety on enrollment day—the busiest day for any education institution—when the system crashed and the finance director got involved.

Steve's team had already spent hours, days, and weeks troubleshooting helpdesk calls related to poor application performance. The team virtualized to get more from legacy systems, but with the increase in I/O traffic, application response time began to suffer.

Steve heard about Condusiv’s V-locity acceleration software and its ability to solve the toughest application performance challenges without adding new hardware. A bit skeptical, he decided to evaluate the solution—and dropped enrollment processing times from 15 minutes down to 5. Convinced of what V-locity could do for their applications, he deployed on other VMs and saw a 522% improvement with SAP and 85% improvement with Exchange.

Read the full story: Stockport College case study.

When Big Data Hurts

by Robin Izsak 5. December 2013 03:38

I recently spoke with Bell Mobility's Adam Moore, a member of the organization's OSS Systems Integration Team. Bell Mobility is Bell Canada's wireless division, employing a multitude of analysts who eat, sleep, and breathe Big Data. They capture metrics and run analytics on call failures, call drops, and call volume—helping the company provide better service to their customers.

Sure we hear a lot about Big Data these days, but we need these catch phrases to talk about abstract concepts. And Big Data is as important as it is abstract: it represents a smarter way to do business, to create value from all this data we have, and to make better decisions. Big Data enables Bell Mobility directors to pinpoint inefficiencies and see where optimization is needed to maintain optimal services to a broad customer base.

So on our call, Adam told me that things had slowed down. His users were dealing with longer and longer SQL query times, which was impacting their ability to do their jobs. Faced with significant data growth and a need for faster delivery of that data to meet SLAs with their users, Adam's team needed a solution to escalating performance problems, like right now. 

In assessing their options, Adam and team conducted an evaluation of V-locity® VM™. The results? A 61% reduction in I/O to the SAN, which led to 98% faster data processing times. And backups? "They used to run at 10MB per minute and sometimes didn't complete at all. Now they run at 60-120MB per minute and complete consistently." 

Read more about the team's success with V-locity in the 
Bell Mobility case study.

Tags:

Big Data | Channel | Cloud | General | Hyper-V | IntelliMemory | IntelliWrite | SAN | SSD, Solid State, Flash | Success Stories | virtualization | V-Locity | VMware

RecentComments

Comment RSS

Month List

Calendar

<<  August 2018  >>
MoTuWeThFrSaSu
303112345
6789101112
13141516171819
20212223242526
272829303112
3456789

View posts in large calendar