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99185
April 19th, 2012 01:00
PS6000: Firmware upgrade experiences
Hi folks,
we are having a standalone PS6000 storage. Its firmware version is 5.2.1. The storage is a part of a Hyper-V failover cluster. In the past we stopped all virtual machines before upgrading the firmware, but not the cluster nodes. It meant service downtime and all the fun related to service interruption.
Could you please share your experiences in upgrading firmware for PS6000? What is your strategy: do you shutdown virtual systems as we do? Or don't you stop all virtual systems but only the sensitive ones like MS SQL servers? Or do you stop no virtual machines and upgrade your storage absolutely live?
Thank you in advance!
Kind regards,
Hermann Maurer
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hkraal
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41 Posts
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April 23rd, 2012 06:00
Sofar I have done 2 upgrades (5.1.2 > 5.2.1 and 5.2.1 > 5.2.2) both while production was running. We had only about 2-3 seconds interuption in iSCSI traffic according to the VMware graphs.
Since we just started using the EQL the utilisation is quite low, with the last upgrade we had about 230 IOPS going of which 90+% was write.
I'm not sure how this holds up when doing 3000 IOPS during an upgrade
Jimby369
1 Message
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May 8th, 2012 09:00
I've updated our PS6000 several times, all went without a hitch. We are running ESX4.1 and most of the server OS's use the PS6000. We did not have to shutdown any of them while the firmware update takes place. The reason for this is the two controllers. When it updates the primary, it will switch to the secondary while the primary is being updated. When that is done, the secondary will then be updated. All servers remained responsive during that time. All opened files, remained open. Now updating the Drive firmware, thats a different story.
RPerrySMM
15 Posts
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May 23rd, 2012 22:00
I have performed 3 firmware upgrades on our group (a PS6000 and PS4000) which holds our production and test Hyper-V clusters, among normal file volumes as well. With all 3 firmware upgrades (including 5.2.2), I have chosen to do them at the quietest time of day, and neither of my clusters have experienced any interruption.
We average 766 IOPS overall, but a quick monitor of my IOPS at 9pm shows an average of 1100 IOPS on my PS4000, and 630 on my PS6000.
hermannmaurer
4 Posts
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June 4th, 2012 01:00
Thank you all for your answers and recommendations!