Hi All,
I need to ask a question about HANA sizing for the data volumes. Ideally size of data volume should be 3 times of the RAM or for 4 times of the RAM. I have read various standard guides and its not clear from them. Please suggest.
If it varies on the version then please suggest for below version.
HANA1.0 SP11
HANA1.0 SP12
HANA 2.0 SP00
Thanks,
Hi Rajesh,
You have not mentioned your sources (always best), so all we can do is guess here but the reason that these rule-of-thumb recommendations vary is because they are... rule-of-thumbs. Rough estimates. Ballpark figures. If these questions show up in an exam, I hope the exam is an old one as, in my view, this would be a not-so-good question.
I did a quick Google search on your question to find rule-of-thumb answers, which returned this PDF, amongst others:
- SAP HANA In-Memory Database Sizing Guideline - SAP Support Portal (PDF)
It is from August 2013, so that would be SAP HANA 1.0 SPS 06 ; in other words, a very old rule-of-thumb. Use with extreme care.
It argues for 2*RAM + 2-3*RAM, say 5*RAM to be safe.
Even more confused? No worries. A lot has happened in the field of HANA sizing since 2013.
There is some excellent information on this topic, which addresses the different factors you have to consider (greenfield, migration, S4, BW, etc). Like to read?
See Alper's excellent blog
Prefer to watch?
Recently, we updated the sizing video tutorial on the SAP HANA Academy
Does this answer your question?
Success with exam,
==
PS Have you seen my blog on the topic?
Regards
Denys / SAP HANA Academy
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Hi Denya,
Thanks a lot for sharing the information this question is wrt to SP11 and SP12. So for Appliance its mentioned as 3 * RAM.
Below screen is from SAP HA200-SP11 and SP12
but while doing mock test and preparation, i found different answer as 4 * RAM, please see below
Thanks a lot for sharing the information this question is wrt to SP11 and SP12. So for Appliance its mentioned as 3 * RAM.
Below screen is from SAP HA200-SP11 and SP12
but while doing mock test and preparation, i found different answer as 4 * RAM, please see below
Hi Rajesh,
SP11? No such thing. Some exam-cram braindump? Ask your money back! Like I said, old stuff and bad question. The right answer is E: 5*RAM.
Even if such a question was asked on the official SAP exam in the past (which I strongly doubt), the SPS (as in Support Package Stack) 12 exam expires in a month, so you can ignore all this. Current exam is SAP HANA 2.0. I would be very surprised if this kind of silly questions would still be present.
Don't waste your time with exam crams. Just study the material. Start with the resources mentioned above.
Hi Denya,
Thanks a lot for sharing the information this question is wrt to SP11 and SP12. So for Appliance its mentioned as 3 * RAM.
Below screen is from SAP HA200-SP11 and SP12
but while doing mock test and preparation, i found different answer as 4 * RAM, please see below
Have you already checked the information which is available in the official documentation regarding Sizing SAP HANA? In think using the Quick Sizing Tool will already answer your question.
Regards,
Florian