#arpnetworks 2015-04-07,Tue

BryceBot

That's what she said!!

brycec

At least get a couple of bucks
BryceBot: no

BryceBot

Oh, okay... I'm sorry. 'I should look into that...'

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acf__

oh super
8.8.8.8 broke here

[13:28]

mike-burns

You in Turkey?

acf__

California

mike-burns

Different kind of oppression, I guess.

acf__

:P
acf@vermilion:~$ nslookup google.com 8.8.8.8
;; connection timed out; no servers could be reached

staticsafe

mtr pls

[13:30]

acf__

http://paste.unixcube.org/k/a3c85f
strange. I didn't see packet loss in the mtr earlier

[13:31]

brycec

lol mike-burns

[13:31]

acf__

but DNS still wasn't resolving
like right now
0% packet loss, DNS not resolving
http://paste.unixcube.org/k/7a9c17
8.8.4.4 is also affected

[13:31]

staticsafe

probably hitting a down anycast node

[13:33]

acf__

it responds to ICMP though
it's also intermittent

[13:33]

brycec

It's responding to me now
but a few minutes ago I also timed out

[13:34]

acf__

yea, it's ok for me now too
nvm, down again :P

[13:35]

brycec

still wfm

[13:37]

anisfarhana

It works here, beautiful.

[13:42]

mercutio

i wouuldn't use 8.8.8.8 and 8.8.4.4 as my two dns servers
you could use one of them, and one of something else.

[13:50]

mike-burns

4.2.2.1

[13:50]

mercutio

personally i like the idea of 3 dns servers.

[13:51]

mike-burns

You glutton.

[13:51]

mercutio

but normal resolvers have long timeouts.

[13:51]

anisfarhana

192.168.1.1 and 1.2 ?

[13:54]

mercutio

it'd be nice if freebsd would shift to openntpd

[14:00]

mike-burns

Sure but NIH.

[14:00]

mercutio

there seems to be another ntp vulnerability on the freebsd security list.
it didn't sound that bad, but hard to know
freebsd didn't make ntpd did they?

[14:01]

mike-burns

Well phk@ announced a re-write.

[14:02]

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[14:04]

mercutio

oh?
so it's going to compete with openntpd?

[14:08]

mike-burns

http://phk.freebsd.dk/time/ https://github.com/bsdphk/Ntimed
Yeah.

[14:08]

mercutio

ahh it seems it may be targeting to be more full featured than openntpd

[14:12]

mike-burns

In the mean time, openntpd is in FBSD ports.

[14:13]

anisfarhana

Excuse me guys.
Is it normal I don't understand what both of you talking about?

[14:13]

mike-burns

It happens to me a lot, so yes.

[14:14]

anisfarhana

Ok carry on.

[14:14]

mike-burns

Is there anything in particular you want to know more about?

[14:14]

anisfarhana

I just thought my sickness level increasing..thats all.
Doctor confirmed that i have a disease few weeks ago.
*has confirmed

[14:15]

mercutio

ntp is network time protocol

[14:24]

anisfarhana

I know that at least.

[14:24]

mercutio

it keeps servers clock's synchronised over the internet. some people have "good clocks" and run servers, which are then connected to by people who have good connectivity
and then users connect to those hosts with good connectivity.

[14:24]

anisfarhana

I had experienced with master clock before.

[14:25]

mercutio

the legacy ntp daemon has been around forever, and is a lot of old code.
kind of like sendmail, bind etc.
openntpd is a kind of minimal implementation with security in mind, with security being preferred over feature-set. afaik it doesn't have hardware support for good clocks to feed etc.

[14:25]

anisfarhana

Why bother using ntp if we know it had problem before?

[14:26]

mercutio

well openntpd is a little newer.

[14:26]

anisfarhana

Whats wrong with single clock on your machines?

mercutio

and ntp can be tweaked to be less ... open
normal clocks on computers lose time a lot

anisfarhana

So people use ntp just because it keep clock sync over the net?

mercutio

it varies a lot.
ntp is good if you want to have second-level accuracy.
so if you have two servers and look at logs on each, you can correlate times.

anisfarhana

and NTP is useless, if you have stand alone server, with no internet connection?

mercutio

if you don't use anything your clock may be 10 minutes+ out of sync eaisly.
with things like dsl modems etc that have ntp support they don't even have a hardware clock.

anisfarhana

I see.

mercutio

so the time will be wrong by months/years/etc.

anisfarhana

I don't have any problem with the accuracy of the clock before.

mercutio

ntp can work with a gps clock

anisfarhana

I mean without NTP

mercutio

http://www.ntp.org/ntpfaq/NTP-s-refclk.htm
windows uses ntp
i've had problems with clocks before.

[14:29]

anisfarhana

Not if you untick the options for Internet Server in windows.
You guys are amazing
You can tell a story about clock and NTP like 24 hours non stop.

[14:30]

mercutio

we weren't talkin gabout ntp for 24 hours

[14:31]

anisfarhana

You have your fact, I have my own fact, debate, arguing, go silent,quit, come back, and another issue.
Wonderful.
Another story/issue etc etc

[14:31]

mercutio

that's kind of what IT is like, yes, anis.

[14:32]

anisfarhana

But IT is killing me.

mercutio

how so?

anisfarhana

It maybe can kill you too.
So don't tell people in future nobody telling you that IT can kill you.

mercutio

life kills you
it's all part of the cycle.

anisfarhana

Correct. But my case, IT is killing me.
If not because of IT, i probably can be better.
5.35 AM
Sleep time.
Bye bye mercutio and mike-burns

[14:34]

mike-burns

Ciao.

[14:37]

anisfarhana

It was nice talking to both of you today.

[14:37]

mercutio

in news today, gmail let their secure certificate expire.

[14:38]

brycec

What? The cert I have loaded is good from 25 March through 22 June, 2015.

[14:39]

mercutio

for smtp to smtp i think
someone was complaining on outages@ a few days ago
and then someone else said it was fine for them

brycec

(I have another tab open to gmail with 19 Mar - 16 June, 2015. Interesting)

mercutio

i imagine it wasn't expired for that long.

brycec

(looks like Google rotates certs every three months)

mercutio

i can't see the emailp, maybe itw asn't outages@
oh it was nanog

[14:41]

brycec

(Looks like smtp.gmail.com serves just a single certificate, valid 18 Feb to 31 December 2015)
(not the same as the reported issue above, I know, just observing different certificate practices)

[14:44]

mercutio

it was smtp.gmail.com on nanog
these certificates have weird times on it

[14:46]

brycec

orly? huh

[14:46]

mercutio

err dates
like why 18 feb to 31 dec
i wonder if they're backdating them a bit for people with off clocks

[14:46]

brycec

I feel like it's more likely they had that cert all along and it may just not have gotten pushed

mercutio

having lots of ssl errors in general is often due to wrong fclock.
for 9.5 months?

brycec

why would that be "for 9.5 months"?

mercutio

it's still a little strange.

brycec

@date Feb 18 2015

mercutio

18 feb to 31 dec

BryceBot

6 weeks, 6 days, 13 hours, 46 minutes, 25 seconds ago. [Interpreted date: Wed, 18 Feb 2015 00:00:00 -0800]

mercutio

oh that's more than 9.5 months

brycec

Right. I'm suggesting that they forgot to install the certificate for 6 weeks

mercutio

that's 10.5 months.

brycec

But the duration is odd

mercutio

oh i mean duration rather than when it was there

brycec

Yeah, i was responding to your remark about backdating.

[14:51]

mercutio

oh right

[14:52]

damn my level3 test site shifted to ntt :(

[15:00]

performance decreased a few days ago.
so it probably shifted then.

[15:08]

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m0unds

was that what caused their outage a couple days ago w/smtp?

[15:27]

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mercutio

m0unds: yeah would have been
although i think it was 3 days ago

[15:42]

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[15:55]

m0unds

m0unds shrugs
i don't use smtp, i just got alerts from google about an outage some number of days ago
s/don't/didn't

[16:01]

BryceBot

<m0unds> i didn't use smtp, i just got alerts from google about an outage some number of days ago

[16:03]

mnathani_

smtp as in port 587 / 465 for sending mail ?

[16:05]

m0unds

yes, i don't use a mail client

mnathani_

neither do I

m0unds

desktop mail client, rather

mnathani_

all web
for me

http://venturebeat.com/2015/04/04/gmails-ssl-certificate-for-smtp-appears-to-have-expired/

m0unds

but in this case, their smtp server was returning an invalid cert - i was able to send mail via gmail interface w/out delays or errors, so i guess it only impacted people sending via smtp.gmail.com or whatever

[16:07]

mnathani_

[16:07]

m0unds

yeah

[16:07]

jbergstroem

what the fork

[16:09]

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mnathani_

I am trying to follow http://evilrouters.net/2009/08/21/getting-bgp-routes-into-dynamips-with-video/
with current routing table
but I keep getting: Segmentation fault (core dumped)
command is : zcat bview.20150407.1600.gz.1 | bgpdump -m - > myroutes-april.1

[17:12]

mercutio

sounds like bad code :)
i dunno why dynamips is
oh are you just trying to get a full route table?

[17:14]

mnathani_

yea
full table
works with code from 2009
bview.20090820.2359.gz
I have that file, but wanted more recent routes

[17:20]

mercutio

maybe you should just get a bgp session?
https://github.com/YuZhang/bgpdump-zy/blob/master/ChangeLog
apparently there were segfaults with empty as paths.
sometimes these things aren't kept current in distributions

[17:30]

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brycec

A+ to up_the_irons :)
brycec is finally connected to his company's ARP Metal box :D
Not exactly blown away by SuperMicro's GUI, but meh, as long as it gets the job done.

[17:49]

mercutio

brycec: use ipmi :)

brycec

Error: Unable to establish IPMI v2 / RMCP+ session

mercutio

uhh it should work
are you using the vpn?

brycec

Yep
(as evidenced by the fact I'm on the web gui :p)

mercutio

true :)
try -L USER -I lanplus

brycec

ipmitool -I lanplus -H IP -U myuser lan print
was what I tried

[17:56]

mercutio

hmm

[17:56]

brycec

(with IP and myuser replaced)
I'm also getting "You don't have permission" popups on certain sections of the web gui, which seems odd.
eg: Maintenance -> System Event Log
Set Session Privilege Level to ADMINISTRATOR failed: Unknown (0x80)
Now I get that ^ from ipmitool

[17:56]

mercutio

oh gah

[18:00]

brycec

brycec plays with -L <privlvl> Force session privilege level

[18:01]

mercutio

yeah that's happening to me now too
but -L USER fixes it

[18:01]

brycec

heh (I swear I didn't break YOUR Metal box :p)

[18:01]

m0unds

haha

[18:02]

mercutio

the gah was mostly about having a copy of my old key
but yeah it works for me
i just need the -L USER
so try ipmitool -L USER -I lanplus -H IP -U myuser lan print

[18:02]

brycec

Can confirm, -L USER gets me no error
Also, "lan print" is blank :/

[18:02]

mercutio

same here
try sensor

brycec

(as is "lan print 1")

mercutio

s/lan print/sensor/

BryceBot

<brycec> (as is "sensor 1")

mercutio

well not that hah

brycec

sol works :D

mercutio

yeah
sweet

brycec

Which is really the most critical one :p

mercutio

it's better than using web
well that and power/reboot

brycec

sensor lists several sensors with no values.

mercutio

hmm it works fine for me

brycec

"sensor get ..." seems to work, slowly.
At least gives me info about the sensor

[18:05]

mercutio

sensor is slow here too
it does a rtt for every line i think

[18:05]

brycec

"sensor reading FAN" has no reply though
(but sensor get FAN" dumped info about it.)

[18:06]

mercutio

yeah i wouldn't worry about sensor normally
i just find it an easy thing to check ipmi is working

[18:07]

brycec

Ditto. Though I would like to be able configure alerts to notify me on failure...

mercutio

youu can do that inside the machine

brycec

(that's one of those "You don't have permissions" popups in the web gui)

BryceBot

That's what she said!!

brycec

BryceBot: no

BryceBot

Oh, okay... I'm sorry. 'youu can do that inside the machine'

mercutio

brycec: did you go for ssd's?

brycec

Pretty sure it's just the standard 1TB

mercutio

ahh ok

brycec

that's what the portal says

mercutio

just 1?

brycec

(I inherited the system)
Looks like the base specs

mercutio

ahh ok
damn i'm paranoid about not having raid :)

brycec

Yep based on price, it's the "Starter" level

..... (idle for 22mn)

mercutio: Tip for the future, -L OPERATOR

mercutio

how's that different from -L USER ?

brycec

USER doesn't have permission to "power reset" ;)

mercutio

brycec

(It's a notch above USER on the scale)

mercutio

i can't say i tried power reset :)

brycec

And corresponds with what's listed under "user list"

mercutio

well sensor still worked with it, thanks.

brycec

:P 18:02:55 ⤷ | well that and power/reboot

mercutio

yeah i've tried it with ipmi in general, just not on arp

brycec

brycec goes back to breaking into his own server

[18:34]

BryceBot

That's what she said!!

[18:34]

mercutio

init=/bin/bash

[18:34]

brycec

OpenBSD ;)

mercutio

boot -s

brycec

hehe

mercutio

i assume everyone uses linux these days for some reason

mnathani_

brycec: are you enjoying the gigabit connectivity on your METAL box?

[18:40]

brycec

Not yet
since I have no login on the box :p

[18:40]

mercutio

heh
http://www.openbsd.org/faq/faq8.html#LostPW

[18:40]

mnathani_

will there be virtualization on that box?

[18:41]

mercutio

openbsd doesn't do virtualisation.

brycec

lol mercutio thanks, I'm familiar ;)

mercutio

oh ok

brycec

*will* there be? Maybe, I might reinstall with FreeBSD or Linux for Qemu/kvm

mercutio

ctrl-alt-del not working by default is a bit irritating.
oh right.

brycec

sonofagoddamnmotherfucking... I wish Java would stop trying to use Firefox's proxy settings. *sigh*
(Sorry, that was out of line. Just frustrates me.)

[18:46]

mercutio

it does seem strange
i thought things didn't generally use firefox's proxy settings.

[18:50]

brycec

Linux desktop running Awesome, so there's no DE for Java to scrape the proxy settings from, so it falls back to using Firefox's for some reason.
I should rephrase that - there's no DE capable of providing proxy settings for Java.

[18:50]

mercutio

reading http_proxy is the standard
that's what chrome, wget, etc use for proxy

[18:51]

brycec

I only use Firefox when I have to bounce over a SOCKS/SSH proxy/tunnel because FF's proxy settings are quick and easy to twiddle. (Chrome is a command-line switch only, or environment, either way requires restarting Chrome)
But, meh

[18:51]

mercutio

yeah i've done similar.
it's kind of annoying that you can't change proxy easily in chrome

[18:52]

m0unds

i used to use some extension to do it for me

[18:52]

mercutio

although in my case it's usually to disable proxy

[18:52]

m0unds

https://chrome.google.com/webstore/detail/proxy-switchysharp/dpplabbmogkhghncfbfdeeokoefdjegm
that's what i used, iirc

[18:53]

mercutio

this looks handy

[18:54]

m0unds

pretty painless, you can set up profiles for different proxies
i used an ssh proxy to evade web filtering at work because it was obnoxious and getting anything whitelisted was awful

[18:54]

brycec

Thanks for the link
heh

[18:54]

m0unds

so i set one up for direct, one for one box, one for another and could just switch it by clicking on the icon and selecting a profile
pretty handy

[18:55]

brycec

That is handy.
Personally, I'm going to stick to using a separate browser. Minimizes my disruption.

[18:55]

mnathani_

m0unds: can that proxy switcher work on a per-tab basis?

[18:58]

brycec

Oh man, going through some old authlogs and seeing attempts for "xbmc" and "xbian" really has me worried that people are connecting their RPi's directly to their Internet connection :/
m0unds: if you didn't notice, "SwitchyOmega is the 2.x version of switchysharp and should be used instead."
(Not sure if you still use the extension since you changed jobs)
(That's from the github)
mnathani_: looks like Omega can switch by host/url

[18:58]

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[19:01]

brycec

https://chrome.google.com/webstore/detail/proxy-switchyomega/padekgcemlokbadohgkifijomclgjgif third slideshow image
"You can tell SwitchyOmega to switch between proxies automatically through the mighty Switch Profile." (from the quickstart guide)

[19:01]

mnathani_

I think I have lost count of the number of new things learnt from this channel

[19:02]

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[19:03]

brycec

lol
w00t, can confirm it does automatic switching
So it's potentially better than per-tab

[19:03]

mnathani_

you mean I can watch netflix now without using Firefox

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mnathani_

awesome!

brycec

Yes
But I'm sure any proxy-changing extension would have allowed that :p

mercutio

http://www.open-xchange.com/dovecot
has anyone heard of this?

[19:06]

brycec

Heard of Dovecot itself? yes of course.

[19:06]

mercutio

nah open-xchange
apparently powerdns and dovecot are now part of some "open-xchange" company thingy?

[19:06]

brycec

I think I heard of it awhile back trying to build an Exchange-compatible alternative, but I might just be confusing very-similar names

[19:07]

mnathani_

their website is too template like for my liking

[19:07]

mercutio

heh
i was always impressed by dovecot
it seems on a similar level to postfix to me

mnathani_

dovecot is an mta, or imap provider?

mercutio

it's a imap provider that has a mda

brycec

mda
(what mercutio said)
(pop too I think)

mercutio

yeh pop too. you don't have to use their mda too.
so you can use postfix/procmail/dovecot as the mda bit
like any of them.
procmail is the easiest known example of a mda
postfix/dovecot do other things as well,
basically dovecot adds indexes on top of normal mail, and if you let it deliver mail for you it'll update the indexes automatically
otherwise it'll update indexes when you check your mail.
but it's also got some filtering capabilities with less arcance syntax than procmail.
personally i still use procmail
hmm dovecot has 1000 euro security bounty too

[19:09]

mnathani_

brb reboot

[19:26]

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[19:27]

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[19:39]

m0unds

brycec: didn't notice, but hadn't used it since sept. thx for heads up though because i did still have it on chrome, just disabled
https://twitter.com/davidu/status/585632424626905088

[19:39]

BryceBot

TWITTER: Re: The Google DNS attack, we see backscatter in our telescope for requests for shifen[.]com. This graph should be 0. http://t.co/Pcm4dTuN8p (Wed Apr 08 02:37:05 +0000 2015)

[19:40]

brycec

I added it (Omega) and disabled it, just to have it in case I ever need it :p

[19:45]

m0unds

works for me, haha

[19:56]

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[20:02]

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brycec

Aw my Metal's gbps connection seems to max out at 100mbps, v4 :/

[20:19]

mercutio

that seems strange
to where?

[20:19]

brycec

Link is GbE, but pulling http://www.azurespeed.com/Azure/Download cruised at 11.98MB/s

mercutio

try curl http://la.meh.net.nz:24/10m > /dev/null

brycec

brycec finds other files

mercutio

i reckon it should go 800 megabit

brycec

Ooh, CDN is faster, 18MB/s

http://cachefly.cachefly.net/speedtest/

m0unds

brycec

Next to impossible to gauge GbE speed with a 10M file, but it clocked at 44MB/s

mercutio

brycec: it's not impossible :)
there's testfile.zip
for 200mb

brycec

15MB from cachefly

mercutio

44mb/sec is nice.

brycec

200MB file at 26MB/s

mercutio

oh you're using openbsd

brycec

I guess my initial test was just crap

mercutio

openbsd's network static isn't great for fast speeds.

brycec

Meh, it's good enough. And now that I've proven I can exceed 100mbps, I'm happy
Thanks mercutio and m0unds

mercutio

if you don't have tcp timestamps enabled on the server, it won't increase it's receive window above 16k

[20:23]

m0unds

sho 'nuff

[20:23]

mercutio

and it caps window size at 1mb by default in the source iirc
it also increase the window size a bit slow for cubic
fortunately for sending it works pretty good

[20:23]

brycec

Looks like OpenBSD is topping out at 75MB/s to mirrors.arp

[20:24]

mercutio

mirrors can do more than that

brycec

aka 600mbps

mercutio

try downloading the same file again

brycec

88.11MB/s

mercutio

yeah that's more like it

brycec

(good thinking)
704mbps

m0unds

nice

mercutio

i've had 100 million bytes/sec from it before
(i think it was divide by 1000 rather than divide by 1024)

brycec

aka 100 mebibytes/s

mercutio

isn't megabyte/1024 ?

brycec

hm, shoot you've got me second-guessing myself now :p

mercutio

actually it is /1000

brycec

megabyte = 1000, mebibyte = 1024

mercutio

hangon that's weird

brycec

mebi = binary = 2^X power

mercutio

but a kilobyte is 1024 bytes/.

brycec

should be 1000 technically
@wa 1 kilobyte to kibibytes

BryceBot

convert 1 kB (kilobyte) to kibibytes;0.9766 KiB (kibibytes);1000 bytes;8 kb (kilobits);8000 bits;7.813 Kib (kibibits);0.007629 Mib (mebibits);information;[information];Words of data on an 8-bit system:, ->1000 words, ->500 longwords;Words of data on a 16-bit system:, ->500 words, ->250 longwords;Words of data on a 32-bit system:, ->250 words, ->125 longwords;Words of data on a 64-bit system:, ->125 words, ->62 longwords

brycec

1000 ^^

mercutio

but 16 megabytes of ram is 16777216 bytes

[20:29]

brycec

@wa 16 megabytes to bytes

BryceBot

Sorry, I couldn't reach the backend API.

brycec

@wa 16 megabytes to bytes
BryceBot: TRY HARDER

BryceBot

Sorry, I couldn't reach the backend API.

mercutio

you broek it?

[20:31]

brycec

I dunno, not my backend API :p
The lazy can just https://www.wolframalpha.com/input/?i=16+megabytes+to+bytes
Answer: it's 1.6*10^7
so, 16000000000000
(I lost count of 0's)
Hmmm what to install on this box... Vmware? Proxmox? XenServer? FreeBSD? So many choices...

[20:31]

mercutio

has it got more than 8gb of ram?

brycec

mercutio

what's it going to be used for?

brycec

It has no purpose
But the boss doesn't want to give it up just in case we need it
(silly!)

mercutio

haha

brycec

(we have a spare VPS for that reason too)

mercutio

linux/kvm then

brycec

aka Proxmox

mercutio

it means if you do want to use it
you can just copy an image over etc

brycec

I personally <3 Proxmox, but I'm open-minded

mercutio

haven't used it

brycec

meh I can do the same with Vmware or FreeBSD (to greater or lesser extends)

mercutio

i use xen

brycec

*extents

mercutio

vmware on 8gb ram?

brycec

brycec shrugs
I'm sure it would install >.>

mercutio

well youu need a raid controller if you want to do raid with it

brycec

But I'm fairly inexperienced when it comes to vmware

mercutio

or you need to do the virtual machine that acts as storage
yeah it'd install

brycec

I'm sure I can't sell the boss on this either, but perhaps I could free up the VPS and move them all over
brycec thinks it's silly to pay for 3 VPS *and* Metal

[20:36]

mercutio

yeah shift to 1 vps + metal maybe

[20:36]

brycec

What reason is there to keep any vps at that point? just reducing spof?

[20:37]

mercutio

yeah
well the metal doesn't even have raid :)
depends how much you're storing, but restore time in the case of hard-disk failure could be quite long

[20:37]

brycec

Good points

[20:38]

mercutio

so for anymthing critical you may want to have a copy locally
or be able to use arp's backup stfuf
and pull it back

[20:38]

brycec

Indeed

[20:38]

mercutio

what about if youu got rid of 2 vps's, made the 3rd vps bigger, and got another hard-disk?
it's probably about the same cost

[20:39]

brycec

Perhaps, though we're pretty good on VPS sizing now (no need to upgrade)
I am looking at upgrades for metal (ssd, add'l drives, etc)

[20:39]

mercutio

maybe you can ugprade to 16gb at the same time?
ahh ok
i thought you may want to be able to run all 3 vps's worth of stuff on one vps.

[20:39]

brycec

Would be nice to have 4*256GB SSD, but I can't justify doubling (actually, more than) the monthly cost

mercutio

i don't thiink you can do more than 2 hard-drives
unless you get one of the 1u servers

brycec

https://www.arpnetworks.com/dedicated says "Max 4"

mercutio

yeah
but i don't think you can upgrade if you're on a blade past 2.
that's for new orders..