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Posts Tagged ‘Windows’

Storage Explorer

August 27th, 2014 No comments

Hello folks

Today I found one really nice utility at Windows Server 2008 R2 and up. It’s called Storage Explorer. It’s MMC snap-in which enables you to see what your fiber optic cards (HBAs) on fiber optic fabrics.

You can see information about your HBAs:

Storage Explorer

This utility somehow connected into fibre optic switch and listed its ports and WWNs connected to it:

Storage Explorer

And also found some information about optical switch (for example management IP address):

Storage Explorer

I know this tool is not as powerfull as Brocade SANHealth, but it’s bettern than nothing 🙂

That’s all folks for today,

Quickie: Right click using keyboard

April 29th, 2014 No comments

In my class today we needed to do right-click in Windows using keyboard. I just found out that Shift + F10 simulates right-click 🙂

That’s all for today,

Prezentácia BranchCache

February 19th, 2013 No comments

ShowIT-BrachCache_Zilinec

Ak by ste mali nejaké otázky, sem s nimi.

 

Categories: Windows Tags: , ,

Maximum Validity For Certificates

February 19th, 2013 No comments

You can configure expiration period for Certification Template. By default there are default maximum validation periods set to:

  • One year for Stand-alone Certification Authority
  • Two years for Enterprise Certification Authority

This means you have Certification Template set its validity for example for 10 years, but you can enroll certificates with validity 1 or 2 years (Stand-alone / Enterprise Certification Authority).

This can be changed via registry keys described in KB254632.

Thank you for my colleague Róbert Švec.

Windows 2012 Data Deduplication

September 4th, 2012 No comments

Today is a day when Windows Server 2012 was released and it’s available for download. First new feature I wanted to test is Data Deduplication.

Theory

Data Deduplication in Windows Server 2012 is performed as background job, which runs by default every hour. This process runs when server is idle and it doesn’t eat all server’s free resources. One job can run per one volume. It can deduplicate/check 100GB/hour. It does deduplication of variable-sized chunks (32-128KB) of files. Nice picture is on the bottom of this page. By default it deduplicates files which were not accessed for more than 5 days. It doesn’t deduplicate following file types: aac, aif, aiff, asf, asx, au, avi, flac, jpeg, m3u, mid, midi, mov, mp1, mp2, mp3, mp4, mpa, mpe, mpeg, mpeg2, mpeg3, mpg, ogg, qt, qtw, ram, rm, rmi, rmvb, snd, swf, vob, wav, wax, wma, wmv, wvx, accdb, accde, accdr, accdt, docm, docx, dotm, dotx, pptm, potm, potx, ppam, ppsx, pptx, sldx, sldm, thmx, xlsx, xlsm, xltx, xltm, xlsb, xlam, xll, ace, arc, arj, bhx, b2, cab, gz, gzip, hpk, hqx, jar, lha, lzh, lzx, pak, pit, rar, sea, sit, sqz, tgz, uu, uue, z, zip, zoo.

Let’s play

This feature is not enabled by default. You need to enable it by wizard Add Roles and Features:

Adding Data Deduplication feature

Adding Data Deduplication feature

When this is done you can use all Data Deduplication Powershell Cmdlets. To use these cmdlets you need to run Powershell as Administrator :-).

Microsoft engineers gave us one tool DDPEVAL.exe which can do little check data on our drives and tell us expected deduplication savings. You can copy utility DDPEVAL.exe to other system and run it to check deduplication expected ratio before even trying deduplication.

Read more…

Quickie: New Windows Server 2012 copy status

September 4th, 2012 No comments

Today I installed final version of Windows Server 2012 and I noticed new copy window which looks very nice:

 

New Windows Server 2012 copy window

New Windows Server 2012 copy window

 

I hope Metro look have more than that 🙂

 

Categories: Quickie, Windows Tags: , , , ,

Quickie: How to connect to projector over the network

August 27th, 2012 No comments

Once upon the time I was at one campus and I wanted to do presentation. When I they gave me IP address of projector I wanted to use, I started to wonder how to connect to it 🙂 Now I know, Windows 7 has utility to do so. It’s called netproj.exe. You run it, enter IP/host name, password and you are connected. Really nice to know 🙂

Categories: Windows Tags: , , ,

Quickie: Display detailed activation and license status

August 6th, 2012 No comments

Sometimes you need to find out if your windows is activated and quickes way to do so is to run command:

slmgr /dli

This command can also do

  • /ipk <Product Key> – Install product key (replaces existing one)
  • /ato [Activation ID] – Activate Windows
  • /dli – Display license information
  • /dlv – Display detailed license information
  • /xpr – Expiration date for current license state
  • …AND MANY MORE

For full help use slmgr /?.

 

Certification Authority – decrease key lenght

June 27th, 2012 No comments

One my colleague wanted to make one of our customer’s environment very secure so he decided to install Enterprise Certification Authority environment with 4kB keys. He created one offline root CA with 4kB key (Windows 2003). This computer is offline all the time. Another CA is Issuing CA which key is signed by root CA. This issuing CA also had 4kB key (Windows 2008 R2). Certificates issued by issuing CA were from 2kB-16kB.

Problem raised when customer wanted to create certificate for Cisco devices to secure Wifi. To make those devices use and trust certificates from issuing CA customer needed to import Root and Issuing CA public certificates into those Cisco devices. And this was a problem. Those Cisco devices didn’t want to work with more than 2kB certificates.

Read more…

Windows Server 2012 on VMWare

June 6th, 2012 No comments

Today we tried to run Windows Server 2012 RC on VMWare. Our version of OS on VM was set to Microsoft Windows Server 8.

After first reboot after installation we got black screen with little circles going around forever:

 

Never ending cycling

Never ending cycling

 

We couldn’t make it work. But we found solution. Just change OS Version of VM to Microsoft Windows Server 2008 R2 (64-bit).

For Windows 8 it is required to change OS Version to Windows 7. Thanks to Róbert Švec.

We hope VMWare will fix this soon 🙂