Archive for the ‘Storage technology’ Category

Xyratex Autodesk branded RS-1200 5412E hard drives (Using most drives)

07 Feb

Well we picked up a “few” Xyratex RS-1220-F4-5412E Autodesk systems a few years ago, you know the ones with the AD22 firmware that is locked.
Total cost was $40usd for 4 including a shed load of spare controllers & drive sleds
The controllers are generally marked:
RS-LRC-F4-5412E-1024-ADSK 08 Mar-31 (happy decade!!)
RS-LRC-F4-5402E-1024-ADSK 06 21 (almost a teenager)

Unfortunately no drives were included.

Had a quick look on the internet to see if we could find anything on “non Autodesk” drives, mostly just people saying that the devices were locked to drives with a special FW AD02 or AD03
Others were saying there was a magic firmware AD20 or something…….

I had a few hours to throw at it the other day, since I was waiting for some new PCB’s to assist in a hack of the new Seagate F3 drives with locked down firmware.
We burnt some drives with a drive sig of XR36 & XR38 inserted them into the array but nothing was showing up , other than the drives were “unsupported”

I cannae change the laws of physics Captain
But it’s in here some place

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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.).


IBM Hard Drive Crash

20 Feb

Digging through my old photo library , I came across the following painful photograph.

Specifically  the pain related not to loosing the disk-drive or data (it was a scrap drive) ,but rather to the fact that the platters exploded on my workbench, throwing micro-fragments of glass into my right hand.(I was trying to disassemble the platter stack)

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