Planning for Storage, Server, and Network Infrastructure

Questions to ask when planning storage and server infrastructure

Storage Requirements

  • What our their current storage environment? (What technology do we use? NetApp, EMC, HP, Hitachi, Compellant?)
  • What is our current amount of usable storage?
  • What is our current data in GB / TB? How much of that data is deemed critical as opposed to 2nd tier, or even archivable?
  • What growth increase are we seeing from year to year? (25%? 30%? 40%? More?)
  • Is this our largest variable IT cost within our overall budget?

Server Infrastructure

  • How many servers do we have within our overall Infrastructure environment?
  • What percentage is comprised of Power, Linux or “Wintel”?
  • Do we have a vendor standard? (HP, Dell, IBM?)
  • What is our overall server utilization (7%? 10%? 20%? 50%? More?)
  • Do we utilize virtualization in our server infrastructure environment?
  • If so, what percentage of our environment is virtualized?
  • What version / type of virtualization do we use?
  • Are we looking to do a server consolidation project to help us save on additional software maintenance and energy costs?

Network Infrastructure

  • Do we have (primarily) our own data center or do we store all of our equipment at a co-location / managed services location? (and if so, whom?)
  • What is our current network environment (Cisco? Avaya?)
  • Do we standardize on a vendor?
  • How old / new is their network environment?
  • What kind of connectivity do they have? (T1? T3? DS?)

Security Solutions

  • Do we have a set standard for our security environment?
  • Do we do quarterly security assessments? (PCI and/or FFIEC Assessments?) (Who do we use?)
  • Are there areas we need to improve?

Software Maintenance

Do we have a goto partner we standardize on for software and hardware maintenance contracts?

Projects

  • What are there next three primary projects?
  • What is our IT budget?
  • What is our Calendar year? Jan – Dec? July – June? Etc.

For more information about planning for storage, servers, and network infrastructure, look at our data warehouse pages.


Adding a second disk to an LVM

In a world of storage on demand and virtualized environments, adding more storage on the fly has become simple even on Linux machines without expensive software like Veritas storage manager.  Here is how to proceed:

  • need to use LVM or LVM 2
  • add the new disk as an LVM capable physical volume: pvcreate /dev/sdb (or hdX)
  • add the new disk to the volume group, e.g. vgextend VolGroup00 /dev/sdb
  • extend the logical volume, e.g. lvextend -L +55G /dev/VolGroup00/LogVol00
  • unmount the volume to resize (this may require stopping services and/or boot into rescue mode)
  • check the partition: e2fsck -f /dev/VolGroup00/LogVol00
  • resizet the partition: resize2fs /dev/VolGroup00/LogVol00

If booting from rescue, before you can act on the partition, you need to enable it with:

  • vgchange -a y VolGroup00
  • lvchange -a y /dev/VolGroup00/LogVol00