Daskew2
1 Copper

CX400 Power supply replacement

Can someone tell me how long it would normally take to replace one power supply in a CX400 and confirm that this is a hot swappable part that needs no downtime on the array.

Thanks.
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5 Replies
RRR
5 Osmium

Re: CX400 Power supply replacement

About one to two hours at the most. You need to disable write cache manually (at least that was what the Procedure Generator stated last year ;) ), unscrew several screws, remove cables and the SPS, which is heavy and needs to be done carefully, because of all the fibres you normally would encounter in a rack with a Clariion installed. After removing the old SPS, you can slide in the new one and reverse everything: so tighten the screws and enable the write cache again.
If you take unpacking and packing into account it's 2 hours max I guess.
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AranH1
4 Beryllium

Re: CX400 Power supply replacement

Are you replacing a power supply for the Disk Processor Enclosure or a Standby Power Supply (which is the process that RRR detailed) ?

They are different process, but both are hot swappable and will be done with all your hosts online. Worst case scenario is that you will have to disable write caching during the replacement which will impact the array performance. So it is best to do this after business hours if you have applications that are sensitive to i/o performance.
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RRR
5 Osmium

Re: CX400 Power supply replacement

Indeed.... I assumed it was the SPS he was asking about ;)
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AranH1
4 Beryllium

Re: CX400 Power supply replacement

You are probably right since the battery will only last so long before it needs to be replaced. I just wanted to clarify :D Good write up though.
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kelleg
5 Tungsten

Re: CX400 Power supply replacement

Has your question been answered? If so, please mark the answer (and award points) to the replay that best answered your questions.

glen
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