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Archive for the ‘Tutorials’ Category

Xyratex Autodesk Kit. 54XX

29 Nov

Seems there is STILL some interest in this kit & getting it working with non autodesk drives.
There is a multitude of “badge engineered” Xyratex products not just Autodesk , but it is all locked down in the software.
Other than that the underlying hardware is identical.

I’ve been asked “ Why don’t you post a firmware file to allow conversion”

An Anecdote:
Many moons ago I used to work at a very large company..
One day…
I was speaking to the owner and he asked me a question:

A: “Do you have any legal problems… personal… company?”
B: “No”
A: “Pity.. I employ a team of lawyers and they have nothing to do at the moment.. if anything comes to mind give me a call”
B: “Ok will do”
So there you go… If there’s potential for a lightning storm .. you don’t stand under a tree.

Where do I go from here
The first action is to get the SERIAL console connected on the back of the device, it is the USB type connection.
This is SERIAL to SERIAL, just someone stupidly decided it was a good idea to use a USB type connection….
you know….. so that people can shove the WRONG cable & release the magic smoke trapped inside.

Once you get your serial connection, the first thing to do it get the equipment version strings & firmware data.
If you don’t do this.. the chance of getting help is limited.

Generally (what I’ve seen so far)
1. ADnn firmware (this is Autodesk, and they have their own firmware which is based around Xyratex FW with extras.

Those extras include:
Hidden factory options
Special checksums for firmware, ensures only Autodesk firmware can be loaded.
Locked down Disk drives
Extra debugging features for their engineers… (thanks guys…)
Code to ensure you cannot get off the AD firmware track
Different software feature unlock keytable… for the controller FW & “Stone Direct”
The latest Autodesk monitor FW Is AD24

  • ‘nnnn’ firmware, this is Xyratex firmware, it has it’s own drive markers, but later versions also allow non branded drives to be used, note however there is a performance IMPACT to using non-banded drives.
    This is becasue the buffer and caching paramiters in the disk drive firmware have been optimized for the yxratex kit
  • The latest Xyratex monitor FW is 0025 (2.5.6)

    Getting all worked up
    There are some points to note before getting all worked up.

    1.On this older kit, it is HARDWARE FIXED at using drives that are 2TB or LESS
    This is NOT something you can hack or bypass and is due to the embedded silicon.
    LSI62042E1
    LSISASX12A which gets you 3GB/s tops

    (nope.. you cannot drop in new chips.. later chips are not pin compatible)

    2.If you use a drive >2TB the total capacity of the drive is NOT 2TB it is a logical ‘AND’ of the addressable space bits, so if you install a 3TB drive you will only get ~1TB.
    This limits your disk drive options unless you are prepared to use the disk drives embedded command codes to limit the drives reported address space( “logical drive capacity” ), before putting them into the storage system.

    1. There is zero support for this old kit & zero updates.
    2. If you use it in a production environment… then you are very very stupid and deserve EVERYTHING you get…. (see point above)
    3. Ensure there is NOTHING on the drives before you start working, each manufacturers product has different software options and the SOFTWARE KEYS ARE DIFFERENT!!!!!, if you do a conversion your licence keys are no longer valid and the options that worked before will stop working. So if you have advanced snapshot enabled, after a conversion you will loose that function & plus any data you had associated with it.

    Hahaha no way people write code this way….
    Both sets of Firmware (Xyratex/Autodesk) are full of bugs, this may be due to the fact that the Software is clearly Xyratex with patches on top.
    Layer upon layer upon layer of patches & fixes…. and more FLAGS than an American Ticker-tape parade…….

    Lot’s and lots of hard coded shit….
    Yep… why code things like dates ,firmware revisions & code check-sums in a separate Data section… just inline it all into the code…

    Since it was easier to flash the chips I never got round to decoding the checksum routine for the roms….
    so no I don’t have a direct up-loadable firmware file to take an AutoDesk->Xyratex.. I could make one. but it’s all about motivation.

    There is a way to modify a Xyratex FW file so that it can be loaded over an AD firmware, bu if anything goes wrong you end up with dead kit and need to flash the onboard chips, it is non software recoverable…….

    How to get an upgrade?
    1. Own a chip programmer
    2. get the info from the monitor
    3. get a picture INSIDE the controller (yep.. there are different versions)
    4. Read out the Binary image on the chip
    5. zip it up
    6. send it to me to take a look

     

    HP Servers with Non HP Disk Drives, Where is Temperature Sensor #29 on DL380?

    05 Nov

    I have a home built system consisting of several HP Proliant DL380 Gen7 & Gen8 servers.
    Now normally when sitting idle these are solid servers with fairly low power consumption and in many cases Whisper quiet when under no load.

    That was until a recent upgrade of a failed disk drive.
    Actually the server went from one seagate drive to almost exactly the SAME model of Seagate drive with a slight difference in the part number.

    From a ST2000LM007 to ST2000LM015, both are: 2.5″ SATA 6Gb/s 5400RPM, 128Mb ram.
    This simple change has left the internal fans running at 90% of full speed and continual warnings of the drives over heating.

    Temperature Sensor #29
    It is believed that this is a “pseudo sensor”, take a bunch of system temperatures pass them though a formula or table matrix and arrive at some sort of “system Health” number.
    Why think this?, because it is possible to “fool” this sensor in reporting different temperatures that are not related to anything temperature like in particular

    There has also been a very interesting support note released by HP recently covering most of the HP production and EOL systems.
    Notice/ ProLiant Gen7 Gen8 and Gen9 Servers – Fan Speed May Be Higher Than Expected If No Hard Drive Is Present In the System

    I think what we are looking at is not actually a system problem ,but rather a iLO X problem, or more likely a design “feature” to lock down the hardware.
    Why would anyone run a server without disk drives?, simple…. cloud implementation… throw in a few optical connectors to an optical switch and a fiber based NAS
    and you have very cheap computing systems that can be easily configured from a central location ,no local disk drives needed.

    Problem is, that this increase in fan speed “by design” as HP likes to put it , is potentially breaking the law of some countries related to Environmental impact of electronic equipment.
    Those extra ramped up fans are adding 90-100W to the power consumption , which equates to over 2KWh a day. which adds up to several hundred KWh per year of power that is being “deliberately wasted” for no reason what so ever(parts NOT fitted in the server, as an option to SAVE power resources.).

     

    Bit coin miner from Ebay scrap (V)

    25 Jun

    Nope … we have not ‘given up’
    In fact we have made some excellent progress
    Read the rest of this entry »

     

    Bitcoin Miner from Ebay Scrap (Part III)

    09 Jun

    Ok….
    A couple of days ago I posted a screen shot of the Ebay Scrap miner pushing 120MH/s

    Today I have a screen shot at 150MH/s
    Read the rest of this entry »

     

    Building a Bitcoin miner from Ebay Scrap (Part II)

    07 Jun

    Well……
    The time has finally come to Build our bitcoin miner.

    Specification

    • Ebay Scrap FPGA
    • Cost <$100USD
    • Speed >150MH/s
    • UART Interface
    • Standard ATX computer Power supply

    Read the rest of this entry »

     

    Tips for using GitHub

    25 Feb

    GitHub is great for finding code and then forking it, however one issue is that there are a significant number of idiots forking projects and then making insignificant formatting changes, maybe they want to see their name up on the web or even claim that they are part of the project (great for job interviews)

    So when forking a project you need to ensure you have the actual base project and not some numpties re-fork of a re-fork.

    Here is a classic example taken of a FULL Git patch:

    @@ -6,7 +6,7 @@
    6# Datatypes (KEYWORD1)
    7#######################################
    8
    9-DHT22 KEYWORD1
    9+DHT22 KEYWORD1
    10
    11 #######################################
    12 # Methods and Functions (KEYWORD2)

    Read the rest of this entry »

     

    Arduino Mega: Direct R/W of a Nand Flash memory chip

    02 Jan

    Since I had little to do over New years day, I threw together some Arduino code that would allow reading of Nand-Flash chips. This includes the memory contents and both the ID and ‘secret’ ID where supported.
    Read the rest of this entry »