We have received two BX1200 platforms and JBOD(SJ2280) from Inventec, which is used for our v1.1 development. About the sample SS2280 issue, I wrote to York and got promise from him: Inventec agree us to send the whole system to their Shanghai team for farther investigation and fixing.
I came back from Hunan at Feb 15th, where I went to take part in Yang Ming’s wedding. It’s very cold in Hunan, even somewhere there’s heavy snow existed. During seven days staying in Hunan, I made a mistake, which is now seemed to be caused by a small misunderstanding matter. In fact, I love my wife, and I know she loves me deeply too. I can not hurt her heart any more. Yes, I must try to control my bad temperament, and be calm. It would be a difficult thing, while difficult thing always means right.
First off, I should insist writing blog here, recording all the things considered meaningful and useful in general working. This blog has been maintained from three years since June of 2005. It is proved to be benefit for my IT career. Good habit would be kept all the time.
When I asked Gavin for some suggestions, he told me to improve myself to be widely developing. I know my situation in current team and what he expects. Sometimes I am not confident enough for lacking full developing and good-communication skill. These two should be highly concerned. The prior one, I decide to read more books and make my work at higher rate. The second one, I have brought a relevant book about speech skill from Shenzhen library, and plan to read it in one month.
Oral English, perhaps is the next important middle stone in career. Obviously oral ability is more and more important in IT field, in which we have to communicate by English.
I am captivated of Japanese culture, especially history and novel. We can learn a lot from this neighbor. Now I am reading Ryunosuke Akutagawa, whose famous representative working are Rashōmon(1915), Hana The Nose(1916).
I have only a Windows installation CD at home, and later I find it does not contain service package. This Windows is setting up as Chinese, so I download a copy of sp2 from Internet. When try to install this new package, it has error and displays the language is not meet. I google from some hints, a fellow said this issue may be fixed by changed the local language parameters in Windows register table. Some illegal Windows copy are based on Singapore Chinese, not main China. As follow the steps and reboot, I can not log on Windows because it warns me that the license has been recognized as unavailable. I has to boot system to safe-mode, and restore the former setting to make the system be normal again. My aim is burn other ISO located at my T23 notepad and install Windows again. Later, I reinstall the system with new Windows CD which is English version.
Fukuzawa Yukichi, the Japanese neoteric educationist and ideologist, expressed the idea that the scholar should work his best to push forward civilization, to concentrate his studies on important issues dosed related to social development, to be brave enough to doubt the accepted, and to be able to suffer anonymousness.
BX1200 Special Version, which is dedicated for PowerOn Tech. is ready today. I have noticed Shan Xiaoyu he could download the firmware now. As expected, a piece of BX1200 will be sent to PowerOn tomorrow morning. There will also a related training about this product in the next day.
I’ve received two Tyan platforms(Code:5372) from Zhang Rongqi, and these two machines are used for our next NAS Gateway products, which will integrate IPMI to instead of early APC fence devices. However, we have to research and study more about IPMI applications.
There are two boards seemed suitable for next generate NAS product. In fact, both of these products should be installed in SuperMicro 5120F-280 or 5130F-430 chassis. Their processors must support 64bit operation system as my yesterday description, and the DDR2 memory is considered better than FBD memory in our application. And the last one, maybe the most important point, is when externel IPMI card is inserted in its identified slot, the IPMI management interface is quite different between the above two board. One shares with on-board ethernet ports, and the other has dedicated RJ45 port. Gavin suggested the first one is better because it will make system architecture more simply.
The disk driver adapter functions of the Super I/O chip includes a floopy disk, driver controller that is compatible with industry standard 820777763 data separator write pre-compensation circuity decode logic data rate selection, a driver interface contrl logic and interrrupt and DMA logic. The Super I/O supports one PC-Compatible printer port(SSP), Bi-Directional Print Port(BPP), Enhanced Paralled Port(EPP), provides functions that comply with ACPI, which includes support of legacy and ACPI management.
When I check the information about disks via BX1200 Web GUI, I find that all SATA disks’ vendor is marked as “ATA”, while SAS disks’ vendor is “Seagate”(We use Seagate disks on that BX1200 platform). It is considered to be accepted in current version.
SSP: Serial SCSI Protocol
STP: Serial ATA Tunnel Protocol
Some famous storage vendors and its NAS products:
EMC: Celerra NS series
IBM: NAS Gateway 500
Sun: Storage Tek 5320
Bakbone: Netvault(it is also used in Plasmon’s SNAZ) for backup and recovery.
ADIC: Tape devices, an American company
FalconStor: Tape devices, and corporate with EMC
MWC: Mirror Write Consistency, when transfer data to remote host, and at the same time it also need to be written to local disk. This locate writing operation only be done after get the confirmation from remote host.
EM64T, Intel Extended Memory 64bit Technology, is extension of 32bit system. This technology makes the OS support up to 16TB memory by adding bit-width for both CPU and memory, while 32bit only supports up to 4GB.
Today’s working is to estimate how much benifit we can get from application 64bit system if upgrade BA880 and all its components.
What does 64bit system mean to developers?By using 64bit platform, the developers can reach better performance when run their programs. Not only this way could encourage the developers to create more powerful applications, but also enable these applications more flexible to adapt in various environments. And the programers even do not need to upgrade their old knowledge if they want to develop in new 64bit platforms.
Larger memory accessing location and 64bit registers provide higher performance on 64bit system. Here, I compare 32bit system and 64bit. As we known, 32bit system’s limit is 4GB memory usage. If there’s a program which is required 3GB memory resource, then it seems the left 1GB(maximum) has to be allocated to OS. Obviously, OS will be slower. The networking server and database server would ofen encouter this problem. And at that time, this 3GB program must need some specical operating to internal code. For example, Physical Addressing Extension, PAE and Address Windowing Extension, AWE, enable 32bit application’s API to access 2GB or higher than 3GB memory space. However, these above special operation have to need more maintenance and resources, even some potential problems.
64bit platform can fix these problems very well. Less code can greatly improve the whole performance. The local bit OS also get benifit from added memory spaces. The all cache, buffer and handler become larger for general applications, and the system could be more stable and reliable. Larger cache and buffer can provide faster data accessing. and support more collateral users.
Register is the fastest memory style which OS can provide. The registers create and keep the results of CPU operating and other computings. 32bit x86 CPU normally has 8 registers, while 64bit x64 processor has 16 registers. There are 128 float-registers 120 general registers in Itanium platform.
As summary, when allocate more memory resource, the performance of register and system can reach higher level they would have never getten in former 32bit environment. 64bit LInux can support file as large as 4EB(2**63).
BX1200 will be released soon except for testing report. The testing engineer has confirmed that the validation is passed, and they will complete the report. Poweron’s Zhang Jianbing told me that Samba, NTP and Http must be required. I need him to confirm some technoical details.
USB3.0, connectors and receptacles will be deeper than the current one, the third major connector of the serial bus standard is set to deliver date transfer speeds of around 4.7Gbps, ten times today’s 480Mbps limit.
Complete writing the step-by-step user guide for BX1200 guide. During the writing, I find some texts are not correct, which are still including NAS880 strings in some tips when mouse is over them.