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NANOG 98: Workshops, Tuesday night fun + more NANOG News via NANOG (Oct 02)
** Have you registered for one of our workshops?
------------------------------------------------------------
NANOG 98's hands-on workshops are filling up. If you've been meaning to
grab a seat, now's the time! Each session caps at 50 attendees and runs on
a different day, so you can attend more than one if the topic interests you.

Multi-Path Traffic Engineering (MPTE) (
https://nanog.org/events/n98-hpe-workshop/) : Monday, Oct....

Weekly Global IPv4 Routing Table Report Routing Table Analysis Role Account via NANOG (Oct 02)
This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
UKNOF, TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats () lists apnic net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith...

NOTICE: FTP service retirement for rr1.ntt.net - November 1, 2026 Dan Lowe via NANOG (Sep 29)
The below applies to rr.ntt.net, the NTT DATA Global IP Network route registry service, specifically to the associated
FTP server on rr1.ntt.net.

NTT DATA Global IP Network has decided to discontinue our FTP service, which is used to fetch our current serial number
and a gzipped copy of our database, for mirror re-seeding or other purposes. As of Nov 1, 2026, we will shut off the
FTP service permanently.

Instead of FTP, we will provide the...

RE: HDD whining Drew Weaver via NANOG (Sep 29)
Yeah,

I was using "RAID controller" as a broad term meaning either hardware or a software based storage arrangement solution.

Thanks,
-Drew

-----Original Message-----
From: Randy Bush via NANOG <nanog () lists nanog org>
Sent: Tuesday, September 29, 2026 3:19 PM
To: Drew Weaver via NANOG <nanog () lists nanog org>
Cc: Randy Bush <randy () psg com>
Subject: Re: HDD whining

we do not use raid controllers. they...

Re: HDD whining Randy Bush via NANOG (Sep 29)
we do not use raid controllers. they hide the hardware, as you note.
linux raid (md) and zfs (usually raidz2) kinda folk here. and then
smartmontools, short test daily, long test weekly.

randy

RE: HDD whining Drew Weaver via NANOG (Sep 29)
Hi,

Barring everything everyone else has said about availability/cost/suitability,

You either do already (or you had better configure it so that you do in the future) get warnings from your RAID
controller(s) when the remaining durability on an SSD falls below a threshold.

I think in Dell it's 5%. So it's not like they fail silently and you're just stuck.

Whereas HDDs (aside from some hours based predictive failure mechanisms...

PCH 2026 global peering survey Bill Woodcock via NANOG (Sep 28)
tl;dr: the survey is at https://pch.net/survey

Background:

Every five years, beginning in 2011, PCH has conducted a comprehensive
global survey characterizing Internet peering agreements. They are the only
ones of their kind, and are relied upon not only by network operators, but
also by legislators and regulators throughout the world to understand the
Internet interconnection landscape.

Our write-ups of the prior surveys can be found here:...

MPLS L2VPN in APAC Ankesh via NANOG (Sep 27)
Hi folks

Looking for a carrier that can provide an L2VPN / pseudowire between Mumbai, India and Singapore. We're a CSP in India
and are interested in establishing L2 transport between Mumbai and Singapore.

If anyone operates this route or knows a carrier that can provide it, please DM me.

Regards
Ankesh

Re: HDD whining Bryan Fields via NANOG (Sep 26)
So this is also a thing as it pertains to spinning rust. SAS will greatly out
perform SATA _every_ time. It can be massive, I've seen 2x the speed and
latency especially on SAS vs the same SATA drive. SAS disks support queuing
and full duplex on the interface (6 vs 12gb really doesn't matter), whereas
SATA doesn't. In a ZFS pool this can be huge, especially with raidz vs mirrors.

IOPS are still crap on rust vs ssd, but SAS...

Re: HDD whining Randy Bush via NANOG (Sep 26)
fwiw, amazon is promising me twelve 20tb wd red pros, and asserts that
they are new. we'll see.

as joel said, hyperscalers are dumping large oxide that has depreciated,
so beware.

randy

Re: HDD whining Randy (K6RP) via NANOG (Sep 26)
I'd tell you where I get mine (slightly used) but I'm afraid they will
get sold out in 2 seconds.

Good luck to all the non-AI/big cloud providers....

---
~Randy

Re: HDD whining Ben Cartwright-Cox via NANOG (Sep 26)
In practice now, the moment you use enterprise drives (and for the love of god update the drive firmware when you first
deploy them) modern SSDs are both increadibly hardy (in terms of endurance) and don't do the "fail at the same time"
thing that a lot of people remember from the older days

If you use consumer grade drives with constant server-like workloads, yeah don't be surprised when they die young, the
OEM drives...

Re: HDD whining Crist Clark via NANOG (Sep 26)
As I understand it, the pressure on HDDs is indirect because of the
shortage and higher costs of SSDs as the memory for SSD gets diverted into
the AI race.

That is, lots of people who would have bought SSD, are buying HDD since the
price delta on a per GB-basis between SSD and HDD has been /increasing/.

Re: HDD whining Nigel Titley via NANOG (Sep 26)
Randy has already mentioned the difficulty in getting 20TB SSDs, but
there are other good reasons for not, for example, using SSDs in a RAID
array... like, unlike HDDs, they tend to all fail at once. I don't know
if he's using them with MD5 RAID but that's another good reason for
continuing to use spinning rust.

Nigel

Re: HDD whining Aaron C. de Bruyn via NANOG (Sep 26)
No disagreement there.
Doesn't mean I have to like it. ;)

-A

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