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Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
have ~150 v210 running and changed 9 psu's in 1½ years.
they tend to break after about 6 months.
it has 2 so the box still is still ok running only warmer on one fan.

"can i call it trouble v210 still running ok with users,
when i want to change psu or fan, not hotswappable."

any suggestions: bying new psu's for spare ?
already ordered 2 not delivered yet.

buy new: quality 40mm.("1.57) fans as spare ?
i think i have to do both !

anyone have experiance on lowering temp by removing
frontdoor/backdoor of a sun 9000 racks ?
/jörgen

"Jorgen Moquist" <jorgen.moquist@n.o.s.p.a.m.mailbox.swipnet.se> wrote in
message news:W%1We.33903$hV3.14762@nntpserver.swip.net...
> Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
> have ~150 v210 running and changed 9 psu's in 1½ years.
> they tend to break after about 6 months.
> it has 2 so the box still is still ok running only warmer on one fan.
>
> "can i call it trouble v210 still running ok with users,
> when i want to change psu or fan, not hotswappable."
>
> any suggestions: bying new psu's for spare ?
> already ordered 2 not delivered yet.
>
> buy new: quality 40mm.("1.57) fans as spare ?
> i think i have to do both !
>
> anyone have experiance on lowering temp by removing
> frontdoor/backdoor of a sun 9000 racks ?
> /jörgen



Just buy new quality ball bearing fans, you can get them quite cheaply
surplus, I usually pay about $4 each for decent 40mm fans.

James Sweet wrote:
> "Jorgen Moquist" <jorgen.moquist@n.o.s.p.a.m.mailbox.swipnet.se> wrote in
> message news:W%1We.33903$hV3.14762@nntpserver.swip.net...
>
>>Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
>> have ~150 v210 running and changed 9 psu's in 1½ years.
>> they tend to break after about 6 months.
>> it has 2 so the box still is still ok running only warmer on one fan.
>>
>> "can i call it trouble v210 still running ok with users,
>> when i want to change psu or fan, not hotswappable."
>>
>> any suggestions: bying new psu's for spare ?
>> already ordered 2 not delivered yet.
>>
>> buy new: quality 40mm.("1.57) fans as spare ?
>> i think i have to do both !
>>
>> anyone have experiance on lowering temp by removing
>> frontdoor/backdoor of a sun 9000 racks ?
>>/jörgen
>
>
>
>
> Just buy new quality ball bearing fans, you can get them quite cheaply
> surplus, I usually pay about $4 each for decent 40mm fans.
>
>
You ought to at least try to match the CFM rating of the original fan.

Not all fans are created equal.

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.

On Thu, 15 Sep 2005, Jorgen Moquist wrote:

> Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
> have ~150 v210 running and changed 9 psu's in 1½ years.
> they tend to break after about 6 months.
> it has 2 so the box still is still ok running only warmer on one fan.

No offense ment, but how can you say they tend to break after six months
when you have 150 systems running for one year and you only changed nine?

9/150 = 6%

is it the same system that have needed replacements several times or
different systems? To me it seems like normal replacement, since there are
two fans to each PSU that means only 3% of the fans have failed within a
year? Sure , It could be better, but your bound to see some failures in
this kind of setup.

At least there ARE two fans so you can schedule a replacement instead of
just having unplanned downtime.

Or am I misreading here?

/Johan A

Jorgen Moquist wrote:
> Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
> have ~150 v210 running and changed 9 psu's in 1½ years.
> they tend to break after about 6 months.

At least on the old Netra t1405, the MTBF for case fans was 20000h,
so it means that when you have a few of them, something is constantly
broken. And these are largish 120mm fans. I'd imagine the small ones
pop a lot more often.

> anyone have experiance on lowering temp by removing
> frontdoor/backdoor of a sun 9000 racks ?

Ours have doors removed, but mostly for convinience than anything
else. If you've fully populated the racks with V210's, removing doors
will do little. You will need better cooling in your lab to prevent
overheating. Is there ample space behind the racks for the hot air to
disperse?

/Marcin

Mr. Johan Andersson wrote:
>
> On Thu, 15 Sep 2005, Jorgen Moquist wrote:
>
>
>>Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
>> have ~150 v210 running and changed 9 psu's in 1½ years.
>> they tend to break after about 6 months.
>> it has 2 so the box still is still ok running only warmer on one fan.
>
>
> No offense ment, but how can you say they tend to break after six months
> when you have 150 systems running for one year and you only changed nine?
>
> 9/150 = 6%
>
forgot to mention five racks installed during 1½ years.
the fans have broken during their warranty time.

> is it the same system that have needed replacements several times or
> different systems? To me it seems like normal replacement, since there are
> two fans to each PSU that means only 3% of the fans have failed within a
> year? Sure , It could be better, but your bound to see some failures in
> this kind of setup.
>
not same system twice, the fans are in serial one pulling one blowing.

> At least there ARE two fans so you can schedule a replacement instead of
> just having unplanned downtime.
>
> Or am I misreading here?
>
> /Johan A
>

yes thats a good thing, i can schedule downtime.
when the fan breaks, the rest of the working ones ups some 1000rpm's.
lowering the lifetime of them i think.

thanks for responding :-)
/Jörgen

Marcin Dobrucki wrote:
> Jorgen Moquist wrote:
>
>> Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
>> have ~150 v210 running and changed 9 psu's in 1½ years.
>> they tend to break after about 6 months.
>
>
> At least on the old Netra t1405, the MTBF for case fans was 20000h, so
> it means that when you have a few of them, something is constantly
> broken. And these are largish 120mm fans. I'd imagine the small ones
> pop a lot more often.
>
>> anyone have experiance on lowering temp by removing
>> frontdoor/backdoor of a sun 9000 racks ?
>
>
> Ours have doors removed, but mostly for convinience than anything
> else. If you've fully populated the racks with V210's, removing doors
> will do little. You will need better cooling in your lab to prevent
> overheating. Is there ample space behind the racks for the hot air to
> disperse?
>
> /Marcin

im planning move them slightly for better cooling.
now reports enclosure 19,23,27celsius ( 67-75 Farenheit i guess).
depending position in the rack, and system load.
thanks for sharing youre experience.
/Jörgen

CJT wrote:
> James Sweet wrote:
>
>> "Jorgen Moquist" <jorgen.moquist@n.o.s.p.a.m.mailbox.swipnet.se> wrote in
>> message news:W%1We.33903$hV3.14762@nntpserver.swip.net...
>>
>>> Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
>>> have ~150 v210 running and changed 9 psu's in 1½ years.
>>> they tend to break after about 6 months.
>>> it has 2 so the box still is still ok running only warmer on one fan.
>>>
>>> "can i call it trouble v210 still running ok with users,
>>> when i want to change psu or fan, not hotswappable."
>>>
>>> any suggestions: bying new psu's for spare ?
>>> already ordered 2 not delivered yet.
>>>
>>> buy new: quality 40mm.("1.57) fans as spare ?
>>> i think i have to do both !
>>>
>>> anyone have experiance on lowering temp by removing
>>> frontdoor/backdoor of a sun 9000 racks ?
>>> /jörgen
>>
>>
>>
>>
>>
>> Just buy new quality ball bearing fans, you can get them quite cheaply
>> surplus, I usually pay about $4 each for decent 40mm fans.
>>
>>
> You ought to at least try to match the CFM rating of the original fan.
>
> Not all fans are created equal.
>
yes ofcourse, CFM i think is cubic feet a minute.
the brand on the installed ones would give a hint ?.
and noise is not a problem i can buy powerful fans.
thanks, jörgen.

James Sweet wrote:
> "Jorgen Moquist" <jorgen.moquist@n.o.s.p.a.m.mailbox.swipnet.se> wrote in
> message news:W%1We.33903$hV3.14762@nntpserver.swip.net...
>
>>Hi the SunFire V210 psu fans is not a long lasting one !,as i figured.
>> have ~150 v210 running and changed 9 psu's in 1½ years.
>> they tend to break after about 6 months.
>> it has 2 so the box still is still ok running only warmer on one fan.
>>
>> "can i call it trouble v210 still running ok with users,
>> when i want to change psu or fan, not hotswappable."
>>
>> any suggestions: bying new psu's for spare ?
>> already ordered 2 not delivered yet.
>>
>> buy new: quality 40mm.("1.57) fans as spare ?
>> i think i have to do both !
>>
>> anyone have experiance on lowering temp by removing
>> frontdoor/backdoor of a sun 9000 racks ?
>>/jörgen
>
>
>
>
> Just buy new quality ball bearing fans, you can get them quite cheaply
> surplus, I usually pay about $4 each for decent 40mm fans.
>
>
thanks, will buy fans, altough not surplus ;-)
/jörgen

Jorgen Moquist <jorgen.moquist@n.o.s.p.a.m.mailbox.swipnet.se> writes:

>yes ofcourse, CFM i think is cubic feet a minute.
>the brand on the installed ones would give a hint ?.
>and noise is not a problem i can buy powerful fans.
>thanks, jörgen.

With fans, I've generally been successful in locating all specs by
putting the part number and brand from the FAN in google. This will
then give you the CFM rating so you can pick comparable fans.

Casper
--
Expressed in this posting are my opinions. They are in no way related
to opinions held by my employer, Sun Microsystems.
Statements on Sun products included here are not gospel and may
be fiction rather than truth.