Dec 10, 2007

How-To Setup RAID1 on Ubuntu OS

This short how-to provides a step-by-step process on setting up a software based RAID1 disks on Ubuntu system. RAID (Redundant Array of Inexpensive Disks) is a computer storage schemes that divide or replicate data among multiple hard drives (array) and is designed to provide data reliability or performance or both.

RAID1 configuration is a mirrored set that duplicates data across several disks at once. Such configuration provides the following advantages:

  • Fault tolerant from disk errors and single disk failures and
  • Increased read performance. Atleast 100% for two disks in array.

Requirements:

  • Atleast two identical SATA hard disks
  • Optional one(1)SATA hard disk with same size as that of the first two for hot spare
  • Ubuntu Alternate CD (x386/x64)
  • A PC with CDROM Drive

STEP 1: Initial Setup

  1. Insert the Ubuntu Alternate CD and make your CDROM the first bootable device.
  2. Select [Text Only Installation] from the selection menu upon boot up.
  3. Select the appropriate language of your choice and keyboard formats.
  4. Upon reaching the hard disk partition setup, choose [Manual Partition]

STEP2: Partitioning

  1. The Ubuntu Partitioner will detect the number of hard disk devices available in your computer. For our setup we have 2 disks with 250G each and this will be identified by your Ubuntu partitioner as: sda(SATA Device A) and sdb(SATA Device B) respectively.
  2. Partition each device with the following configuration:


Device

Partition Type

Size

Bootable

sda

RAID

249.5 G

Yes


RAID

0.5 G

No

sdb

RAID

249.5 G

Yes


RAID

0.5 G

No

Note: Instead of choosingExt3 filesystem as what you would normally do when partitioning a non-raid drive, select RAID for all partitions allocated for each device.

3. Proceed writing to disk for changes when prompted.


STEP3: Configuring RAID

  1. Select [Configure RAID] option
  2. Select RAID1
  3. Type 2 for the number of active devices
  4. If you have 1 hot spare disk available, type 1 or 0 if non available.
  5. Select sda1 and sdb1 which will be represented as md0 and used for installing root files. The equation for this will be: md0 = sda1 + sdb1.
  6. Your done setting up the first multidisc device (md0).
  7. Create another Multidisc Device
  8. Type 2 for the number of active devices
  9. Select sda2 and sdb2 which will be represented as md01. This will be used for swap space later. The equation for this will be md1 = sda2 + sdb2
  10. Your done setting up the second multidisc device (md1)
  11. Finish creating multidisc.

STEP4: Setup File system

  1. Setup md0 device as Ext3 File system type and mount it as root (/).
  2. Label it as root and flag it as bootable
  3. Setup md1 device as swap.
  4. Write changes to disk

That's it!

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Dec 7, 2007

MSOutlook Fixes for Google Apps GMail

One of the initial challenges I encountered when adopting Google Apps (GA) to our workplace is connecting MSOutlook email clients to GMail. Depending on the MSOutlook version, the following are the observed side-effects of GMail-Outlook integration:


1. Initial MSOutlook connection problems.

If POP isn't working properly for you, please ensure that your
settings are identical to those listed below. Even small differences
may prevent Gmail's POP service from functioning properly.


If POP isn't working properly for you, please ensure that your settings are identical to those listed below. Even small differences may prevent Gmail's POP service from functioning properly.

E-Mail Accounts tab

Your Name: (optional)
E-mail address: (your Gmail address, including '@gmail.com')
User Name: (your Gmail address, including '@gmail.com')
Password: (your Gmail password)
Remember password: (optional)
Log on using Secure Password Authentication: disabled
Incoming mail server (POP3): pop.gmail.com
Outgoing mail server (SMTP): smtp.gmail.com

Outgoing Server tab

My outgoing server (SMTP) requires authentication: enabled
Use same settings as my incoming mail server: enabled

Advanced tab

Incoming server (POP3): 995
This server requires a secure connection (SSL) enabled
Outgoing server (SMTP): 465 or 25
This server requires a secure connection (SSL) enabled
Server Timeouts (Greater than 1 minute, we recommend 5)
Leave a copy of messages on the server disabled

Downloading Google POP Troubleshooting Tool will help you identify if you have your pop client is misconfigured.


2. Unusually slow downloads of attachments.


Make sure to download the latest updates of your MSOutlook version and UNCHECK leave copy of messages on the server option. In my case, this has somehow marginally increased the download speed of your mail attachment.


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Dec 2, 2007

Energize Your Business The Google Apps Way


You're running a business with 5 to 200 employees, bought and maintained linux servers to run a host of different open source applications like: email server, instant messaging, document management system, project management, trouble ticket and etcetera etcetera. Then you suddenly end up in a maze of disjointed pieces of softwares worrying about maintenance for each and confusing users on remembering to log-in everytime they use a specific application.

See how Google integrated our company's communications into a single, efficient, and highly collaborative yet cost effective solution. Learn from our experience and make it work for you.

Yes, I have heard and seen about this seemingly ubiquitous name all over the internet and all I know at first about this company is advertising until very recently, I run into Google Apps and blurted out loudy – eureka! Much to my fascination I found what my users need for business collaboration and productivity at no extra cost. The concept of software as a service (SaaS) seem to appeal to companies our size. It is scalable, and need not maintain technical personnel to mange our communication requirements.

As an overview of our company setup prior to Google Apps, we have emails hosted from our primary webhost which are accessed from a variety of ways. Some users use Outlook, Thunderbird, GroupOffice (a web-based groupware), and the email host's online email interface. To support instant messaging requirements, we have installed jabber server in our in-house linux box and Knowledge Tree Document Management System software for document management. All of these softwares work pretty well on their own right but the complexity of maintaining different software applications becomes tedious and confusing to most end users. The most common problems of having many , non-integrated softwares are as follows:

  1. Too many databases to maintain.

    Many if not all softwares stores some form of data and these are kept in the developer's database of choice. We used to have only PostgreSQL database but after installing several applications, I ended up having atleast three(3) database types with four to five (4-5) different databases. Maintainance like user management become too tedious whenever we have new employees.


  2. Too many logins.

    One of the common complaints we encounter in our department is the end users' disappointment on logging in to many different sites whenever they want to use a service. Say for example a user who access email and document management system need to login twice to two different URLs. Another problem about this setup is when a user has different passwords for each service and forgets it.


  3. Inconsistent Look and Feel.

    Since these software are developed by several communities or companies, they designed their interfaces differently. Because of this, making our users learn the ropes of using these softwares becomes a very challenging tasks. Normally, they end up being frustrated and stopped using the softwares all together.


  4. Software and hardware upgrades.

    Each installed software requires different libraries that must be installed before it can run. Documenting and knowing all these seem to be very unnecessary. As the number of softwares grow, hardware requirement increases as well.


Google Apps is a collaboration platform service that manages emails, calendar, instant messaging and documents all in a single application. The highlight of this service is its collaboration where employees can literally work on the same page. In terms IT spending, we need not worry about hardware maintenance since these are all managed in Google's data centres. Here's a quick snapshot of what Google Apps is about:


  • Never lose an mail ever.

    Google's Gmail provides several ways to filter and search your mail. You don't even need to delete mails since they constantly increase their storage size daily. At the time of this writing, Gmail now has a whopping 5.3 GB of storage. More than any email providers you can find on the internet today which would only give you 2GB.


  • Share calendars.

    This time I can share my schedules on projects to my office staff. I can see all my staff's schedules as well. I can have my schedule remind me in a variety of ways, including through my cellphone SMS service.


  • Instant messaging.

    Instant messaging is integrated into Gmail. The best part of this is chat messages can be stored and searched just like your email. You can also call online or leave voice mails on your recipient's mailbox.


  • Share and collaborate documents.

    Intead of sending documents as an attachment, send documents as link and store them in a diferent repository. This way, you provide a central repository of document where users can access. This will prevent you from searching through heaps of emails just to look for a single attachment for a specific subject. You can even do real-time document collaboration with multiple users concurrently.


Google Apps and the Future


What's in store in the fute for Google Apps? Based on some reports Google (as it has always been) will provide more services and functionalities for its current set of applications. Here are some of the list:


  • Google Docs and spreadsheets' user interface will improve dramatically in the next coming months. It will have more formatting and editing functionalities much like of MS Office 2007. It will mostly like support additional file types or uploads such as pdf and image files.
  • Some reports also start to spread that Google will be adding a new service for remote online data storage. This will also translate to being added up into Google Apps service.
  • Since Google has acquried JotSpot, it is currently being redesigned to fit in to Google Apps. Anytime probably next year, you can add more services to your Google Apps other that ist current set. Wike applications like, trouble ticket, CRM, project management etc.
  • Google Phone will surely include Google Talk. This means you can talk to any online employees as long as you have internet connection.



Google Apps has provided an easy step-by-step migration from your old email system. I followed every single piece of instructions and advices until we had everything fully running. This is just our second week of Google Apps and will make a log of its development on my blog every now and then.

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Nov 29, 2007

Free Online Backup Storage For Small to Medium-Sized Enterprises


I stumbled upon an advertisement very recently about an online service giving out a free 2Gb online backup storage service -IDrive-E. I thought that 2Gb storage is really a little more than enough capacity for a common user specially if you only store office document such as .doc, .xls, .ppt, .pdf, and .odf files. I sifted through their entire site and drafted my recommendations below.

Cool Features:

  • FREE 2-12 Gb backup storage

    Initial sign-up will give you a 2GB storage. Another 10Gb will be added if you refer a friend's email from your email service provider such as Yahoo! Mail or GMail.


  • Continuous Backup

    Backs up regularly all files that changed from the last backup schedule without consuming much of your computer's resources.

    Backup commences when your computer is not in use/idle and may be as frequent as every 10 minutes.


  • Revision History / Previous Versions

    This is my favorite feature. All changes made to a file are never deleted or overwritten during backups.File changes or previous versions are kept and may be restored to a specific version at any given time. A maximum of 30 previous versions are kept per file. Actual storage utilization is computed as the total file size of the most recent file version and NOT the total file size plus all its file versions.


  • Very Secured

    On your first backup, the provided backup client will prompt the user for an encrytion key and data gets encrypted on the user's computer before its get transported and backed-up. Files are encrypted using an AES-128 bit algorithm.


Gotchas:

  • Refer a friend for 10Gb extra!

    With all the promising features built into the service, getting an additional 10Gb extra space for a referral is very tempting but think very carefully before you do. IDrive-E will ask you to input on their online form your email's username and password so that they will gain entry into your contact list and prompt you which among your contacts are you willing to refer. Even though you chose two contacts in your list, you can never reallly be too sure if they haven't kept your email's username and password or worse harvested all your email addresses.


  • A new company

    ProSoftnet Corp, the company that sell IDrive-E service, is a fairly new company that really has no concrete and proven track record of stability. Though, it been mentioned on some magazines about its reliability, two years of service doesn't really prove or say much.


Recommendation:

It never really hurts to try after all, it's just a backup. Allways keep two copies of your most critical files though – one maybe on your thumb drive and one on the IDrive-E online storage. I strongly recommend NOT to sign-up the 10GB extra space for a referral program. ProSoftnet does not include any gurantees or assurances that your emails will not be harvested for other purposes. So don't!


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Nov 5, 2007

KAINOS’ Managed Care Rules, Rights, and Responsibilities


Knowing your plan’s rules – and your rights and responsibilities under those rules – can help you make the best use of your KAINOS Healthcare Plan. It also can save you money and help you get the right care you need.

You get a lot of information about your managed care plan when you enroll. The member handbook explain the benefits – the kinds of treatments and services your plan pays for. Keep this material handy so you can refer to them when you have questions. Read the plan newsletter or our blogs, like this one. It keeps you up to date on any changes in your plan.

A health plan contract provides a legal definition of plan benefits. If you are in a managed care plan through your job, the contract may be between your employer and the health plan. You may need this if you have a serious problem with the care or services you get from your health plan.

The Rules

Your membership materials provide information about:

  • Costs and Benefits
Find out which benefits your plan pays for and which it will not. Find out how much you need to pay (on programs requiring co-payment) for each doctor visit, for prescription drugs, and for medical equipment.
  • Member Services

Find the telephone number for the member services department of your health plan. Call this number (1-800-1-888-6300) with questions about how to file a complaint, the health plan rules, costs, and benefits. Be sure to tell the member services department of any changes in your address, phone number, job or family life that may affect your coverage.

  • Practice Protocols

See if your plan recommends doctors follow “practice protocols” or “treatment guidelines” for certain chronic diseases and other illnesses. These guidelines usually are based on standards of care set by medical experts. You are more likely to get good quality care if your doctor follows these guidelines.

  • Out of Network Care

Know if and when your plan pays for visits to doctors and hospitals that are not part of your plan’s network. This is sometimes called going “outside the network.” You might need to pay all or a percentage of the doctor’s or hospital’s fee if you go out-of-network for care. Costs incurred during “outside the network” services are reimbursable only if it conforms to your subscribed healthcare plan.

Your Rights

If you know your rights, you can stand up for yourself and protect yourself from an unfair plan decision.

  • Read through the plan materials for information about what you can do when your plan or your doctor makes a decision you don’t agree with.
  • Talk with someone in the member services department to find out how to appeal a plan decision you feel is unfair. For example, how to appeal your plan’s decision to stop paying for your medical treatment.
  • Your insurance/human resource department can tell you about laws that protect your right to health care in managed care plans. Your insurance/human resource department may help you file an appeal or reconsideration.

Your Responsibilities

People today take more responsibility for their health than they did 20 years ago. They are more active, eat better, and work as partners with their doctors. Taking responsibility for your health can mean a healthier and happier life. Here are some ways to do that:

  • Learn healthy habits. You are responsible for what you eat, how much exercise you get, whether you smoke and following your doctor’s advice when you are healthy and when you are sick.
  • Call any KAINOS affiliated doctors or your plan’s help line (1-800-1-888-6300) if you need advice about medical problems.
  • Go to the nearest hospital emergency room if you have a life-threatening or very serious health problem. Be sure to call your health plan as soon as possible.
  • Attend Health & Wellness Seminars sponsored by KAINOS. It’s a free service provided for members so take advantage of all the amenities available as much as possible.

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