gpdbguru

1st kindly do have a look onto the link  Click Here... Redshift is lack of procedural languages and Greenplum has mapreduce applications. Obviously, Greenplum runs anywhere while Redshift runs only in AWS. Redshift only uses instance types with ephemeral storage so if you stop the cluster, you lose the data.  For instance types with ephemeral storage, you can't replace a disk.  Maybe Amazon does for Redshift instances but everyone else, they recommend to replace the node if you have a disk failure. Redshift ds2.8xlarge instance type has 16TB of usable storage but the d2.8xlarge instance type has 12 2TB disks.  I'm guessing they are using RAID5 but why?  If they lose a disk, they will replace the entire node unless they do something special for Redshift.   Greenplum running on d2.8xlarge uses RAID0 so you get denser storage and all 48TB.  If you lose a disk, the software HA kicks in and the mirror segments take over.  Y...

What is the difference between RPM and YUM? Though we have multiple sites / blogs providing the answer for your question, still I will try my best to find the best and provide the same as best as possible. So here we start, let me start with what these two terms stands for? RPM - Red hat Package Manager YUM - Yellow Dog Update Modifier That was easy to remember right. Let’s move on, The term of YUM is widely is used that is a very useful package manager and on the other side of the coin, RPM is the original package for which the YUM is working. The purpose of designing and producing the remarkable creation of YUM is to provide the facility of adding or removing software to the users.  Whereas this software set come within the RPM. So, the RPM is a useful program the purpose of which is to manipulate specifically the packages that are required to be influenced.  While the YUM is a more intelligent management system which has the ability to locate the d...