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Saturday, February 05, 2011

Masuk klasifikasi manakah Data Center Anda?

Tier pada Data Center

Design data center berangkat dari kebutuhan yang ada, untuk kemudian didefinisikan berbagai perlengkapan IT yang diperlukan beserta pemilihan teknologi berbarengan dengan designs infrastruktur data center yang lain. Ada 4 tier dalam perancangan data center yang setiap tiernya menawarkan tingkat availabilitas yang berbeda disesuaikan dengan kebutuhan suatu data center menurut TIA 942 (Telecommunication Industry Association). Berikut diberikan tabel spesifikasi setiap tier pada data center:
PARAMETERTIER I -BASICTIER II - REDUNDANT COMPONENTSTIER III - CONCURRENTLY MAINTAINABLETIER IV - FAULT TOLERANT
Tingkat availabilitas99.671%99.741%99.982%99.995%
Sifat terhadap gangguan (terencana atau tidak)RentanAgak RentanTidak rentan terhadap gangguan terencana (karena sudah ada skenario penanggulangan), namun masih rentan terhadap gangguan tidak terencanaTidak Rentan
Keadaan power dan cooling distributionSingle path with no redundancySingle path with redundant component (N+1)Multiple power and cooling distribution path tetapi hanya satu path yang aktif, termasuk komponen yang redundant (N+1)Multiple active power and cooling distribution path termasuk komponen yang redundant 2(N+1)
Ketersediaan raised floor, UPS, generatorBisa ada maupun tidakHarus punya raised floor, UPS dan generatorHarus punya raised floor, UPS dan generatorHarus punya raised floor, UPS dan generator
Waktu implementasi3 bulan3-6 bulan15-20 bulan15-20 bulan
Downtime tahunan28.8 jam22.0 jam1.6 jam0.4 jam
Cara untuk melakukan maintenance preventifHarus di shutdown keseluruhanHanya untuk power path dan beberapa bagian lain dari infrastruktur yang memerlukan proses shutdownMemiliki kapasitas tambahan dan distribusi yang cukup untuk menampung beban yang dipunyai sistem utama ketika sistem tersebut di maintenance
Skala data center yang cocok dibangunKecilSedangBesar (skala enterprise)Besar (skala enterprise)
Pengertian N di atas mengacu kepada cacah komponen yang diperlukan agar seluruh pusat data dapat beroperasi pada beban penuh. Sebagai contoh, apabila pusat data pada beban penuh memerlukan 5 unit AC, maka pusat data tier-4 mempersyaratkan total 2(5+1)=12 unit AC, 7 diantaranya sebagai cadangan. Untuk tier-3, maka hanya diperlukan 6 unit AC, hanya 1 sebagai cadangan.
sumber: wikipidia.org

Q. What is data center tiers? What is tier 1 data center? Which tier / level is the best for maximum uptime?

A. Tier 1 to 4 data center is nothing but a standardized methodology used to define uptime of data center. This is useful for measuring:
a) Data center performance
b) Investment
c) ROI (return on investment)
Tier 4 data center considered as most robust and less prone to failures. Tier 4 is designed to host mission critical servers and computer systems, with fully redundant subsystems (cooling, power, network links, storage etc) and compartmentalized security zones controlled by biometric access controls methods. Naturally, the simplest is a Tier 1 data center used by small business or shops.
  • Tier 1 = Non-redundant capacity components (single uplink and servers).
  • Tier 2 = Tier 1 + Redundant capacity components.
  • Tier 3 = Tier 1 + Tier 2 + Dual-powered equipments and multiple uplinks.
  • Tier 4 = Tier 1 + Tier 2 + Tier 3 + all components are fully fault-tolerant including uplinks, storage, chillers, HVAC systems, servers etc. Everything is dual-powered.

Data Center Availability According To Tiers

The levels also describes the availability of data from the hardware at a location as follows:
  • Tier 1: Guaranteeing 99.671% availability.
  • Tier 2: Guaranteeing 99.741% availability.
  • Tier 3: Guaranteeing 99.982% availability.
  • Tier 4: Guaranteeing 99.995% availability.
Contact us for detail..

Friday, February 04, 2011

When Reality Hits ITIL - Implementations

Is implementing ITIL really simple? It is easy to hear about ITIL from a
consultant or read from a blog or even attend an ITIL course, but the
hardest part comes while implementing those processes in an environment.
Each and every organization is different; they vary with people,
processes, environment, type of support they provide, help desk and much
more. This white paper is intended to help the IT managers to self assess
their help desk and its maturity level in order to implement the right
process at the right time.

http://www.manageengine.com/products/service-desk/itil-reality.html

contact us for detail:

Fanky Christian
Business Development Director
PT. DAYA CIPTA MANDIRI SOLUSI
IBEC Building 2nd Fl
Jl. KH Wahid Hasyim No.84-86
Jakarta Pusat, 10340, Indonesia
SMS: 62-21-98054359
Telp: 62-21-3924716
Fax: 62-21-3903432
mobile: 62-812-1057533
www.dayaciptamandiri.com

Online Store: www.tokofc.com

visit:
- dayaciptamandiri.blogspot.com
- fankychristian.blogspot.com
- www.facebook.com/fanky.christian

Structure Cabling and Data Center
|AMP|BrandRex|CCSI|NetViel|Goldbach|UniFlair|Mira|APC|
|Fingerprint|FM200|FirePro|
|Cisco Systems|Juniper|Raisecom|Proscend|

Multimedia
|Kiosk System|
|finosMQS - multimedia queuing system|
|finosMDS - digital signage system|
|finosSQM - sequence queuing system|

SMS Gateway
|SendQuick|OZEKI NG|

Enterprise Management
|OpManager|AppManager|ServiceDesk Plus|NetflowAnalyzer|
|Desktop Central|Firewall Analyzer|FacilityDesk|Solarwinds|

Database and Chart
|FusionCharts|Navicat|

Services
|Network Implementation Services|Operation Support Services|

Wednesday, February 02, 2011

New LMS from Instructure Goes Open Source

A Utah-based company has fired a warning shot across the bow of learning
management system (LMS) companies, including market leader Blackboard,
with the announcement that it's turning its new LMS into open source.
Instructure has publicly released the source code to its Canvas learning
management system, which was launched in 2010. Currently, 26 institutions
have signed contracts with Instructure, including 17 within the Utah
Education Network. The company said that more than 100 other schools are
currently evaluating its application.

"We're excited to offer an alternative to the current LMS options," said
Josh Coates, Instructure's CEO. "We want to open up the market to allow
for innovation so teachers and students can be at the forefront of
technology."

Canvas, a cloud-based application, provides standard course management as
well as newer features, such as learning outcomes, peer review, migration
tools, e-portfolios, screen sharing, video chat, and rubrics. The
SpeedGrader puts a video, blog, document, or spreadsheet into a format
viewable in a Web browser, allowing the teacher to grade the material and
make comments.

Above all, the product is being promoted as having an open architecture.
"We don't think we're going to predict what the next big shift is for the
Internet, so we've built an architecture that's easy to plug into," said
Coates. "Historically, LMSs have been walled gardens. They've been closed
and monolithic in their architecture. From day one, Instructure has been
designed to be open."

As a start, Canvas integrates with Web services such as Google Docs,
Google Calendar, SMS, Facebook, Twitter, and RSS. When a teacher changes
the date of a quiz, for example, the system automatically sends a text
message to students who want notifications sent to their phone, a Facebook
message to students who want notifications sent to their social network,
or an e-mail message to students who prefer that.

Panola College, a community college in Carthage, TX, began a pilot of
Instructure in January after using WebCT for multiple years. WebCT is now
owned by Blackboard. "Blackboard is going to eliminate WebCT altogether.
At first, I thought we would just make the natural transition to
Blackboard, but I found out quickly that that wasn't what a lot of our
faculty wanted to do. So that's when we began to investigate other
potential LMSes," said Ann Morris, dean of distance education.

Joined by Jason Gilbert, Panola's education technology coordinator, Morris
began evaluating alternatives, and that's when Canvas came onto their
radar. They attended an audio conference about the product in September
2010. "I expected not to like Canvas and was very surprised. They were
offering some of the very same tools for students and faculty that Jason
and I were wishing for," she recalled.

Those features include a multitude of options for faculty to communicate
with students, its social network integration capabilities, and the
SpeedGrader function, which will allow the college's online speech
teachers to request that their online students video themselves using
their Webcams and then upload it to Canvas.

Panola began its pilot testing in mid-January with 13 instructors--"far
more than I expected," Morris added. "We thought two, three, four
instructors would give us a good analysis. Then we had 13 come forward,
close to a third of our faculty that uses an LMS. We were excited about
that."

Although Morris is hesitant to express any opinions about the product--"I
don't want the instructors to feel as though I'm guiding them in one way
or another," she explained--she noted that she's pleased with how open the
company is to taking feedback. "As our teachers who are piloting Canvas
request a feature, we pass that to the Canvas engineers who will
incorporate it. We're not just using it. We're providing them with a lot
of valuable feedback and helping them make their LMS better."

Morris said she expected Panola to be done with the first stage of its
pilot in April. At that point faculty and students will be surveyed to
develop a recommendation to the college's administration. If that goes
well, the school will bring on more instructors to try out the LMS during
the summer, and then more during the fall. "Our pilot will be a year-long
process," she explained.

"I think [Instructure] has some very intelligent leadership," Morris
concluded. "I think they're committed to surviving whatever may come their
way as they strive to become a real player."

Instructure started as a class project in a venture start-up course Coates
was teaching at Brigham Young University. "One of the assignments was:
List the top five worst pieces of software you use on a daily basis,"
Coates recalled. "Their No. 1 answer was Blackboard, which is what Brigham
Young uses. The follow up to that was to find out how really bad software
can be in the market." Two students who eventually founded Instructure
began studying the LMS market and, when they decided to start the company,
brought Coates in as an advisor and investor.

The company's move to open source may be a pre-emptive effort to avoid a
potential patent run-in with Blackboard, which had about 63 percent of the
market in 2009, according to the Campus Computing Project. In 2007 when
Blackboard was thick into a patent infringement lawsuit against
Desire2Learn, the company issued a statement that granted unrestricted use
of its patented technologies to open source developers. That pledge also
covered companies that service those systems, including hosting,
maintenance, support, and customization. The legal dispute between the two
companies formally ended in December 2009.

However, Coates insisted the move to open source will allow the company
"to penetrate the market quickly." And, he added, "In some sense it
inoculates us from a Blackboard buyout. We hear that so often: 'Your stuff
is so great. Blackboard always buys everyone out. What happens when they
buy you out?' Our response is, 'Well, no, that's not what we're in this
for. I want to change the market. That's why I'm doing this. Going open
source is the best way to do that. If Blackboard tries to buy us, we'll
rebuff the offer. And no matter what happens to Instructure, Canvas is out
there because it's open source."

Instructure is offering three editions of its product. Canvas Community
Edition (CE), available for a free download, will include an open source
AGPL license and community-provided support. Canvas Pro will have a
commercial license and will offer four levels of support, from basic to
professional service. Both of those editions are expected to be run on
institutional hardware. The third option will be Canvas Pro Cloud, which
will be made available as a service subscription and come with three
levels of support, from basic to premium.

As part of that last edition, Canvas provides for automated provisioning.
During peak usage periods, Instructure's hosting service notices traffic
jumps and automatically configures additional servers to handle the load.

Later this month the company will issue a version of SpeedGrader for the
iPad. In the third quarter of 2011, Instructure reported, the company will
release its entire application as an iPad app, with other mobile platforms
to follow.

"The LMS market is in transition," noted Panola College's Morris. "More
colleges and universities are leaving the big LMS systems and going with
[alternatives]. With constraints on budgets, we have to keep an open
mind."

About the Author

Dian Schaffhauser is a writer who covers technology and business. Send
your higher education technology news to her at dian@dischaffhauser.com.


Contact us for details,

Fanky Christian
Business Development Director
PT. DAYA CIPTA MANDIRI SOLUSI
IBEC Building 2nd Fl
Jl. KH Wahid Hasyim No.84-86
Jakarta Pusat, 10340, Indonesia
SMS: 62-21-98054359
Telp: 62-21-3924716
Fax: 62-21-3903432
mobile: 62-812-1057533
www.dayaciptamandiri.com

Online Store: www.tokofc.com

visit:
- dayaciptamandiri.blogspot.com
- fankychristian.blogspot.com
- www.facebook.com/fanky.christian

Structure Cabling and Data Center
|AMP|BrandRex|CCSI|NetViel|Goldbach|UniFlair|Mira|APC|
|Fingerprint|FM200|FirePro|
|Cisco Systems|Juniper|Raisecom|Proscend|

Multimedia
|Kiosk System|
|finosMQS - multimedia queuing system|
|finosMDS - digital signage system|
|finosSQM - sequence queuing system|

SMS Gateway
|SendQuick|OZEKI NG|

Enterprise Management
|OpManager|AppManager|ServiceDesk Plus|NetflowAnalyzer|
|Desktop Central|Firewall Analyzer|FacilityDesk|Solarwinds|

Database and Chart
|FusionCharts|Navicat|

Services
|Network Implementation Services|Operation Support Services|

Sunday, January 30, 2011

"Netbook" dengan Material Ramah Lingkungan

KOMPAS.com — Mempertimbangkan spesifikasi teknis saja rasanya tak cukup dalam memilih netbook. Kini, perlu dipertimbangkan apakah material netbook yang akan dibeli cukup ramah lingkungan. Sebab, apa gunanya spesifikasi bagus jika proses produksinya ternyata merusak alam.

Bagaimana caranya memilih netbook dengan material yang ramah lingkungan? Hasil Greenpeace Electronics Survey 2010 mungkin bisa memberikan panduan. Greenpeace menilai berbagai perangkat produk dengan kriteria yang ketat.

Berdasarkan hasil survei itu, Acer TravelMate Timeline X TM8172 dikatakan sebagai yang paling baik. Entah mengapa produk ini masuk kategori netbook mengingat layarnya 11,6 inci. Hasil penelitian menunjukkan bahwa netbook ini paling sedikit mengandung material berbahaya. Material berbahaya yang masih digunakan di netbook antara lain PVC, BFR, Antimony, Phtalate, serta Beryllium.

Greenpeace memberikan skor 28 untuk keramahan lingkungan material pembuat netbook ini. Skor tersebut hanya 2 poin lebih rendah dari skor maksimum, yakni 30. Kekurangannya hanya pada RoHS exemptions used. Selain material yang ramah lingkungan, Acer TM8172 juga termasuk unggul dalam konsumsi energi dan lifecycle produk. 

Laporan tahunan ini dilakukan Greenpeace dengan melakukan review untuk menguji produk-produk elektronik yang ramah lingkungan. Jadi, jika hendak menggunakan teknologi sekaligus melestarikan lingkungan, Anda mungkin bisa mendasarkan pilihan pada hasil survei ini.

Diakui Greenpeace belum ada netbook yang benar-benar bebas 100 persen material berbahaya. Bahkan untuk netbook skornya cenderung rendah. Namun, upaya terus mengurangi sudah dilakukan para produsen. Berikut peringkat netbook paling ramah lingkungan:

1. Acer TM8172 2. Asus 1015PED 3. Samsung NP-N230 4. HP Mini 5103 5. Dell Latitude 2110
build-access-manage on www.dayaciptamandiri.com