your success will also depend on how sensitive the plugs are to being
pulled out enough for this to be inserted under it.
I don't think that there's any way to say that this will be 100% safe,
it's just too easy to jostle something wrong when messing with power
cords, but I think this sort of thing is your best bet.
David Lang
On Fri, 30 Dec
2011, Matt Simmons wrote:
This guy on ServerFault recommends it, too -
http://serverfault.com/a/27514/4392
I think it's going to boil down to practice. Work on doing it to something
that doesn't hate being unplugged so much as a computer does. Maybe a
monitor or something similar.
--Matt
On Thu, Dec 29, 2011 at 11:17 PM, Luke S. Crawford <[email protected]> wrote:
So I've got to move a handful of co-lo customers on to new PDUs
soon. all the dual power supply customers were easy; we are down to the
single power supply customers. You know how it is, I really want a
customer standing by when I reboot something, as they don't always come
back up, and the customer is far better equipped to deal with that, even
if they are remote (I have serial everything) than I am; Or, even if
I'm better equipped, I'd prefer they were there driving. Last time I did
this, one customer gave me a root login on his system and told me to just
go
when I felt like it. His PSU blew, and he was unreachable via phone.
I ended up just replacing the PSU for him, I mean, it's not like I don't
have a supermicro parts dump in my office, and it worked out okay, I
told him to buy me a new PSU and then give me what he thought was fair
for the labor 'cause he didn't approve it so I didn't feel right quoting
prices. he was pretty happy and paid me more than I would have asked for
but eh, it could have gone either way, you know? I'd really rather have the
customer around rather than cleaning up myself.
So apparently there exists products for moving power plugs while keeping
them powered. "Plug capture device"[1] - you pull the cord 1/8th inch
from the outlet, slip this thing over that contacts the hot and neutral
tong
and you pull it out. this device then starts supplying power as soon as
mains power is disconnected, and then you can reverse the process to put
the
plug into another outlet and remove the device. - it looks like the
product is targeted at law enforcement (It comes with a USB "mouse
jigglier"
so the screen doesn't lock meanwhile.) but the demo [2] sure makes it
look like exactly what I need to move servers from one PDU to another.
(though, it also looks like it might increase my workman's comp bill.
Well, I end up doing almost all the hardware work myself anyhow, and I'd
be willing to do this myself, too, so eh.)
Anyhow, the thing is reasonably cheap; if it works reliably, heck five
hundred bucks would be cheap to avoid scheduling the moves I've got to
schedule in the next few weeks. (let us just say I chose poorly when
purchasing PDUs many years ago. An older and wiser me (with more capital)
wants to rectify the mistake.) and if it is reliable, there are all sorts
of uses I can think of for it in the future, especially as I've got to
deal with a lot of customer gear that I don't have a login on.
Of course, if the thing isn't reliable, it's not worth using if even one
of the servers reboots uncleanly.
[1]http://www.wiebetech.com/products/HotPlug.php
[2]http://www.wiebetech.com/videos/HPLT_Demo.php
Obviously, the "plug capture device" you see at the end is what I want-
the power strip capture would do me little good, as the point of this
exercise is to move the servers off the pdu, not to move the pdu itself.
--
Luke S. Crawford
http://prgmr.com/xen/ - Hosting for the technically adept
http://nostarch.com/xen.htm - We don't assume you are stupid.
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