Archive for the ‘Uncategorized’ Category.

Weitere Broker

http://agora-direct.de/about

Introducing Broker für Interactive Brokers, Konditionen ähnlich wie bei LYNX.

 

http://www.sino.de/

im Basispackage 8,80 € min, 0,15%, max 75,00 €. Also u.U. etwas teurer als LYNX, je nach Volumen.

 

Diverse amerikanische Broker

https://www.thinkorswim.com/tos/myAccounts/displayRates.tos

http://www.just2trade.com/fees/commissions

http://www.scottrade.com/

http://www.elitetrader.com/vb/showthread.php?s=fe01bfbe8c99239892b5805ef7ffc7bc&threadid=200455&perpage=6&pagenumber=2
Elitetrader hat unten eine Liste verschiedener Sponsoren (darunter auch Interactive Brokers). Die Liste könnte eine nähere Untersuchung Wert sein. Im Forum gab es außerdem irgendwo einen interessanten Beitrag zu IB. Der Konsens ist, dass IB nichts für Anfänger ist, und ihr Support auch nicht herausragend gut / erreichbar – sie halten keine Händchen – aber die Preisstruktur sowie die handelbare Produktbreite unschlagbar ist.

HighPoint RocketRAID raidtool

Thanks to Gegereka I managed to download the raidtool.exe, and share it here for your convenience.

I could not locate it on the manufacturer’s website, although they do have a good driver selection, e.g. for the Highpoint Rocketraid 2300
Update: HighPoint’s customer support provided a newer version of the tool to me. I did not try it, but I have uploaded it for you. They took approximately 2 business days replying. See below for their reply and instructions:

Hello,

You can try using the tool, but it’s hard to say what state the data is in, as the failure occurred during recovery mode (rebuild).

The disabled status is assigned in cases where multiple disks have failed, or the parity is faulty.

It requires that the system be booted to DOS mode, and is able to access the card’s BIOS/firmware.
It is a graphical utility that is similar to our controller cards’ BIOS display.

Instructions:

The utility is as a compressed file (.zip format).

It’s DOS based, and graphical – it responds to standard keyboard inputs.
If you need a DOS boot diskette or CD image, we recommend visiting this site (downloads are free):

http://www.bootdisk.com

To run, boot to a DOS floppy, and use the following command:

raidtool.exe

Use the arrow, Alt, and Tab keys to navigate the windows, and the Enter key to select a device (disk, array), and execute a command.

It is capable of many different functions.
The functions you will want to use are:

Save Array Info
Delete Array
Create Array

1) Use the arrow/tab keys to highlight the array, then press the Spacebar or Enter to select it.

2) Click Alt and use the arrow keys to highlight the “Array” tab. Press down and select the “Save Array Info” option – this will save the current RAID configuration to the boot media (floppy or USB drive required).
Next, use the “Save MBR” option – as above, this will save the configuration data to the floppy.

3) Next, use the Delete option, and delete the RAID arrays.
This option will not delete actual, useable data from any of the disks, and will not damage the partition tables – it was designed specifically not to. It is simply a way clear out any junk RAID data, or “disabled” status from the disks.

4) Next, use the Create option and recreate the array. This is similar to the card’s BIOS menu.
Do not worry about the Build options in this case.
If it insists you select an option, choose “No Initialization”.

Once recreated, exit the utility and reboot – make sure the card’s BIOS recognizes the array correctly (Press Control + H when prompted).
If not, you can always run this utility again – it can be used as many times as needed. Do not attempt to rebuild or verify the array unless you can access the volume.

Regards,

Customer Support Department

If you’re under no time pressure you might consider getting in touch with HighPoint’s customer support yourself.

You have to run the raid tool from DOS. Download a boot disk creator from here. I used DOS 6.22 without problems, having DOS on one floppy disk and the rocketraid tool on another floppy (you can just switch them after booting, use dir to show the contents and type raidtool to start the raidtool).

Before you do anything else: write down the information about your current RAID setup. You can get it by using ARRAY->Information / other self-explanatory menu entries. You will need it later to recreate the RAID. Information you will need includes: Array name, RAID type, Cache policy, Block size and sector size.

Tip: also write down the exact identifiers of your harddrives (even same models have unique numbers in the end) and which channel and place which harddrive is assigned. You might need it later to recreate the exactly same RAID setup you had.

You have to delete the RAID(s) and create a new one (use enter in the drives window to enumerate the drives in the correct order, numbers will appear beside them, then use create from the Array menu.)

You also might want to save the previous configuration to the floppy before deleting.

Attention!! Ensure that no initialization / keep old data is selected! () The tool will apply the new RAID information once you OK the dialog.

I Repeat: do NOT initialise the drives – this means actually deleting the data which is on them! (There’s also an option to do that in the BIOS / boot time configuration. Do not use it!)

Be sure to check out this very helpful thread in it’s completeness on the hardforum before working with the tool. Below, I reproduce an essential part from it – should the hardforum ever remove the thread.

“Hello,

Attached is a RAID recovery utility – it may be able to remove the disabled status.
The disabled status is assigned in cases where multiple disks have failed, or the parity is faulty.
Try using the all of the original disks first (including the drive originally listed as failed).

It requires that the system be booted to DOS mode, and is able to access the card’s BIOS/firmware.
It is a graphical utility that is similar to our controller cards’ BIOS display.

Instructions:

The utility is as a compressed file (.zip format).

It’s DOS based, and graphical – it responds to standard keyboard inputs.
If you need a DOS boot diskette or CD image, we recommend visiting this site (downloads are free):

http://www.bootdisk.com

To run, boot to a DOS floppy, and use the following command:

raidtool.exe

Use the arrow, Alt, and Tab keys to navigate the windows, and the Enter key to select a device (disk, array), and execute a command.

It is capable of many different functions.
The function you will want to use are:

Save Array Info
Delete Array
Create Array

1) Use the arrow/tab keys to highlight the array, then press the Spacebar or Enter to select it.

2) Click Alt and use the arrow keys to highlight the “Array” tab. Press down and select the “Save Array Info” option – this will save the current RAID configuration to the floppy – we can have engineering analyze this necessary (default disk order is sequential – channels 1 through 4).

Next, use the “Save MBR” option – as above, this will save the configuration data to the floppy.

3) Next, use the Delete option, and delete the RAID arrays.
This option will not delete actual, useable data from any of the disks, and will not damage the partition tables – it was designed specifically not to. It is simply a way clear out any junk RAID data, or “disabled” status from the disks.

4) Next, use the Create option and recreate the array. This is similar to the card’s BIOS menu.
Do not worry about the Build options in this case.
If it insists you select an option, choose “No Initialization”.

Once recreated, exit the utility and reboot – make sure the card’s BIOS recognizes the array correctly (Press Control + H when prompted).
If not, you can always run this utility again – it can be used as many times as needed. Do not attempt to rebuild or verify the array unless you can access the volume. “

My own story

I was asked to help with file recovery on a Windows 2003 server running completely off a RocketRAID 2300. 4 drives à 400 GB capacity connected together in a RAID 5. The problem was: the second drive was marked “critical“, and the fourth drive failed completely once it was accessed, and was marked “disabled“. Meaning, I would not be able to run the RAID at all, even for recovery purposes.

As things were, it would not even boot into Windows Server 2003 – it would keep restarting before reaching the login screen. After using F8 to enter the advanced  boot options, I disabled “automatic restart on failure” (translated from German), and got a blue screen instead: “UNMOUNTABLE_BOOT_VOLUME

If I would rescan from the management tool, the RAID would come up again, trying to rebuild itself – and failing.

After using the raidtool.exe to rebuild the RAID properly, I could not boot into the (native) Windows on the RAID anymore: “NTLDR is damaged”.

File recovery software

Linux

There are drivers for Linux, also this document unspecifically about dmraid might be of some interest. Unfortunately, I fear, that it is too complicated to set up a new Linux with correctly installed drivers and settings for recovery purposes and could even destroy data. I have not tried it and advise against it for people who are not Linux-savvy and know their way around the tools already.

Further reading

Here’s a good overview introduction to RocketRAID cards (RR 2340) – they’re not “entirely” a hardware RAID system.

Use Wikipedia to read more about RAIDs.

GEZ und Adresssammler

Die GEZ ist ein mitllerweile zwar etwas freundlicherer, dennoch gleichbleibend lästiger Verein, der Toner und Papier verschwendet, in dem schamlosen Versuch Bürger zu zwingen, Geld für teilweise absurde, teilweise unnötige, teilweise aber auch sinnvolle Dinge auszugeben.

z.B. ist die Umstellung der öffentlich-rechtlichen auf HDTV sicherlich von einer geringen Notwendigkeit gewesen (Nein, es gibt keinen Markt, wenn es Zwangsabgaben gibt!). Desgleichen finde ich die Ausstrahlung von werbefreien Filmen – James Bond udgl. – sowie Konkurrenzformate zu Antenne Bayern usw. unnötig. Unnötig, weil das auf dem Markt auch anderswo repräsentiert ist, bspw. lassen sich die RadioHits auf Antenne Bayern oder Gong hören, der James Bond aus der lokalen Videothek ausleihen – mit gesparten GEZ Gebühren könnte jeder entscheiden, was er oder sie am Liebsten machen möchte.

Fadenscheinige Begründungen (neuartige Rundfunkgeräte) sollten sicherstellen, dass der ungebrochene Geldstrom zur GEZ und damit zu den öffentlich-rechtlichen weiterfließt. Schließlich haben die Sender ja viel vor, und auch viele Verpflichtungen – bspw. den GEZ-Leuten gegenüber, die die Mitbürger möglichst weiterbelästigen sollen – wir verweichlichen sonst womöglich noch.

Ob diese GEZ Männer wohl dennoch sich bald auf der Straße wiederfinden? Gemäß diesem Artikel wird ab 2013 eine Pauschale pro Haushalt eingeführt. “Die Ministerpräsidenten haben das verabschiedet” – ich finde es hätte darüber eine Volksabstimmung geben müssen! Und da bin ich nicht der einzige. Im Übrigen finde ich das Konzept sinnvoller, da unnötige Bürokratie – haben Sie ein Gerät, oder nicht – sowie das ständige Nachbohren der GEZ gespart wird. Allein dadurch kann das Programm besser gemacht werden. Naja, zumindest was die Öffentlich Rechtlichen darunter verstehen.

Die GEZ kauft die Daten für ihre lustigen Briefe unter anderem von dieser Firma, einer Tochtergesellschaft der Bertelsmann.

Hier ist eine immer noch aktuelle Vorlage um einem Adresssammler ordentlich auf die Finger zu klopfen, damit er sein Spiel nicht mehr ungehemmt weitertreibt. Und hier ist das Bundesdatenschutzgesetz dazu.

Collection of interesting links

Motivation

One of the things I’ve been experiencing myself … money is not a good motivator for excellent results!

If you want to build a ship, don’t drum up the men to gather wood, divide the work and give orders. Instead, teach them to yearn for the vast and endless sea.
– Antoine de Saint Exupéry

I found the video and the quote on CodingHorror. Thanks, guys!

This is the other video:

JQuery and performance

This is just a collection of links to interesting posts:

http://jquery-howto.blogspot.com/2009/02/5-easy-tips-on-how-to-improve-code.html

http://paulirish.com/2009/perf/

http://www.artzstudio.com/2009/04/jquery-performance-rules/

http://stackoverflow.com/questions/2694431/whats-the-most-efficient-way-to-manage-large-datasets-with-javascript-jquery-in

 

“Autoloader” – load the nodes when requested.
(“virtual rendering”)

http://github.com/mleibman/slickgrid
http://plugins2.jquery.com/project/GridNic (Seems to be the same, the author is definitely the same! This one has PDF / Word / Excel export capabilities.)

 

Speed Comparison

http://paulirish.com/2009/perf/

http://mootools.net/slickspeed/ (Old versions of JQuery used!)

http://dante.dojotoolkit.org/taskspeed/ This is a more up-to-date version

=> JQuery 1.4.2 yields significant performance gains over JQuery 1.4.1

 

Storing Data locally

http://www.jstorage.info/

I know I stand in line until you think you have the time to spend an evening with me

I’m worth 5 Mln €.

How come?

  • 50 € per hour
  • x 25 h per week average work time spent on the company
  • x 50 weeks per year (2 off)
  • x 80 years (being a little optimistic here)

= 5.000.000 €

OK. That’s not much – I’ve expected more.

Here’s my usual rant about earning: if I keep selling myself for less than these 50 € per hour I’ll diminish even this pretty low amount (that’s a whole life spent working, think about it!)

As a friend of mine, Korbinian, also pointed out: there’s choices to make. I’ve got to decide between a (used) private jet, a nice villa or a private performance by Tina Turner. Having excluded Tina as nice, but having a poorer cost-benefit ratio than the other two, there’s still tough decisions on the road ahead! Luckily there’s things I have not at all the power to buy. These would include “For the Love of God” by Damien Hirst, most of the real yachts (one, the Princess Mariana, being sold at 87 Mln. € excluding VAT.), a Bugatti oldtimer (Bugatti Royal Kellner for 10 Mln. €), and many more. If you consider that I need to spend money on health insurance and technical gadgets, I even would not be able to afford such simple things as the “Double Eagle” for 7,59 Mln $ (assuming the price in Euro to be around 5 Mln. €.). Thus, I feel no pressure at all to decide.

A work in progress …

Wir sind Helden!

Judith Holofernes hat eine einfach nur geniale Stimme!

Man squirts milk from his eye

200 Posts!

Das ist eigentlich der 200 und ZWEITE Post.

Ich darf die Gelegenheit nutzen, mir selbst zu gratulieren, und meinen Lesern zu versprechen, weniger technischen Kram ins Blog reinzustellen und mehr zwischenmenschlich interessante Skizzen zu veröffentlichen.

Langsam, langsam schreibe ich mich wieder in Form. Aaaawufff! Wuff! Wuff!

dog