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.

Undelete in 2007

by Michael 26. December 2006 12:57
It's been quite some time, if ever, that we've posted anything about Undelete. So, there's no time like the present. The next major Undelete release is in the works. While, as usual, I can't divulge some of the cool new things planned for that version there are a couple of obvious updates that will occur. One feature is adding x64 support and the other is support for Windows Vista. With Vista being a workstation OS, and the x64 platform more of a benefit to high powered application systems (video editing, databases servers, etc...), we actually haven't had all that much demand for these two functions. Most of our Undelete customers are buying the Server Edition for their file servers (where it captures network deletions). While it does well at what I call after-the-fact deletions, those are not its strengths. Undelete's real value is as a "file protection" product (prevents you from losing the file in the first place) and fits well into the Continuous Data Protection - for Files (known as CDP) category. Because I brought up Vista, I should mention the file system in Vista once again. In an earlier blog, while talking about Diskeeper, I noted that Vista's NTFS has no significant changes (just a few minor ones) to the structure with respect to defragmentation -which is true. However, Vista's NTFS has introduced major changes for file filter applications like Undelete. The new feature is called TxF, an acronym for Transactional File System. I'll write another blog on TxF, and cover its functionality and discuss some of the findings our developers and I have learned while investigating it.

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Diskeeper Vista support is near release

by Michael 4. December 2006 13:14
A few select Diskeeper Corporation enterprise customers have received Diskeeper 2007 for Vista. The primary reason for the delayed release is due to subtle changes in the Master File Table (MFT). We've addressed these but are being very cautious and testing this heavily (bootime defragmentation). Microsoft also had to make a last minute fix to Vista (made in their RTM build) to address some issues that affected one of Diskeeper's advanced features. I expect (can't promise yet) we should have a broad release for Vista available for download towards the end of December. As I mentioned before, it will be a free update to everyone on maintenance and everyone who has purchased/upgraded to Diskeeper 2007.

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Diskeeper x(4 score bits minus 2 bytes)

by Michael 21. November 2006 02:49
One of the frequent questions our staff are asked is whether Diskeeper for Windows x64 operating systems (AMD64/EM64T - CPUs) is native or compatible? By compatible, that of course means it runs in 32 bit mode; native referring to it running in 64 bit mode. Beginning with Diskeeper 10, the Professional editions (and above) have operated entirely in 64 bit mode. We recompiled the software and made the necessary edits to offer this to users running x64 operating systems. While unexpected, we did see some slight performance gains. One of the perks of x64 architecture, as noted in wikipedia.com's x86-64 entry is: "very large files can be operated on by mapping the entire file into the process's address space (which is generally faster than working with file read/write calls), rather than having to map regions of the file into and out of the address space." If you're a avid video editor or engineer working with CAD/CAM 4GB+ files (not uncommon these days), you've likely been running Windows XP x64 for some time. As Diskeeper 10 had a multiple component architecture, both the scheduling service (dkservice.exe) and the defragmentation engines (DfrgNTFS.exe and DfrgFAT.exe) ran in native 64 bit mode. In Diskeeper 2007 all operations are controlled directly under the Diskeeper Service (still called DKService.exe), and it too runs native x64. When you download and extract the purchased software you'll notice right away that you receive two instances of Diskeeper. One installation program is for x86 and the other for x64. Each comes in an independently labeled folder. An autorun.exe program will properly select the install file to execute. If you have an x64 processor but a 32 bit Windows, you will need to install the 32 bit version of Diskeeper; the autorun program will handle that for you as well. The same support in Diskeeper (Professional editions and above only) will be available for Vista x64 operating systems as well.

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Vista RTM and Diskeeper

by Michael 9. November 2006 13:32
If you're reading this blog, chances are you've already heard that Vista is code complete. The RTM (release to manufacturing) version has already been delivered to select Microsoft customers as well as OEM manufacturers that build PCs. I talked with some Microsoft enterprise license customers (e.g. 40,000+ clients) who also run Diskeeper on all their desktops, and they are already building system images to roll out Vista. They are all very anxious to get a Diskeeper that runs on the Vista RTM code. Our OEM partners are also eager to get Diskeeper for their new PC images (Lenovo, Sony, etc...). As we have already been informing our enterprise customers, we are about a week or two away from offering a private field test version of a Diskeeper 2007 build that will run on the Vista RTM version. Starting earlier this year we offered a public field test build of Diskeeper 10. That Diskeeper beta product will continue to be available for a short while longer on our downloads page. A key reason why we don't have a beta for RC2 is that we discovered some minor bugs in Vista (RC2) that affect some advanced Diskeeper features. We reported these to Microsoft, and they have fixed them in the RTM version. If you have the RTM version of Vista , you can participate in our private field test. Email our team at FieldTest@diskeeper.com with a quick note you'd like to test and that you have the Vista RTM build available to test on. If you are Diskeeper 2007 customer (just purchased or have a software assurance agreement), the update to Diskeeper 2007 that supports Vista will be free. More to come on how to get that will be emailed to you in the coming weeks. We're also targeting to have trialware available for Vista later this month on our website, possibly extending into early December.

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FragShield

by Michael 8. November 2006 02:32
Fsutil, allows you to to adjust the max size for the reserved zone. example: fsutil behavior set mftzone 4 The values range between 1 through 4, with each equally 12.5% of the volume. E.g. a setting of 4 = 50% of the volume. There are few reasons to extend this, and you are better off to pre-allocate the MFT expansion with Diskeeper's FragShield than rely on the just-in-time expansion of the MFT into the reserved zone (less overhead, and elimination of the possibility of the MFT becoming fragmented). Use Frashield when the MFT is getting full (Diskeeper will notify you) or prior to adding a large number of files onto the volume. We have customers who leverage this feature for corporate HQ servers that are designed to receive many small files uploaded from branch locations. If you're a gamer installing games

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