AFF

Lifetime concern of AFF SANs (AFF a220) hosting VM with database applications

MarcusSerrao
2,166 Views

Good day. We have an AFF a220 and we are concern with hosting a VM on it via vSphere that has a Windows database application, PostgreSQL, that could potentially shorten the lifetime of the SAN. We realize that SSD drives have a limited number of writes however the SANs like the AFF models are optimized to mitigate the number of writes to disk required. At least from reading this article (Optimized Write Performance)

https://community.netapp.com/t5/Tech-ONTAP-Articles/All-Flash-FAS-A-Deep-Dive/ta-p/87211

 

1) Should we be concerned about  hosting our database app VM on the SAN and wearing out our SAN disks sooner?

2) If so, do you have any recommendations for SAN configuration such as RAID mode that may lengthen the lifetime of the SSDs in the SAN to mitigate the increased number of writes?

 

thank you in advance!

1 ACCEPTED SOLUTION

SpindleNinja
2,134 Views

I wouldn't worry about it.  check the SSD wear - 

 

storage disk show -ssd-wear

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4 REPLIES 4

SpindleNinja
2,135 Views

I wouldn't worry about it.  check the SSD wear - 

 

storage disk show -ssd-wear

MarcusSerrao
2,124 Views

Thank you so much!

SpindleNinja
2,123 Views

no problem.  there are also EMS events that get generated when they are high. 

e.g. - 

 

shm.threshold.ratedLife

 

https://docs.netapp.com/us-en/ontap-ems-9121/shm-threshold-events.html#shm-threshold-mediumerrors7days

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