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Marcin Mazurek - Disaster Recovery in distant DC; people, hardware, latency.
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Disaster Recovery and Global Traffic Management
1.
Disaster Recovery in
distant DC; people, hardware, latency.
2.
• What is
really the Allegro.pl? • Distaster Recovery - true story • Latency - why 20 ms matters • Data Centers topology agenda
3.
Allegro ... QXL
? Serwisy Aukcyjne Serwisy Ogłoszeniowe Płatności .pl .cz .ro .ua.bg .hu .sk .lt .pl .pl Sklepy Internetowe
4.
Allegro... beginings
5.
o Allegro... today
6.
o Allegro... today about
1000 servers
7.
o Allegro... today about
1000 servers about 300 IT staff
8.
o Allegro... today about
1000 servers about 300 IT staff about 40 in infrastructure
9.
we are growing Source:
http://www.aukcjostat.pl/
10.
why bother?
11.
Qvo vadis?
12.
Qvo vadis?
13.
Qvo vadis?
14.
Qvo vadis?
15.
Qvo vadis?
16.
Qvo vadis?
17.
2 hours by
plane... ~800 km Go west...
18.
2 hours by
plane... ~800 km Go west...
19.
WWCKD ?
20.
WWCKD ? Hope is
the mother of lost battles No guts, no glory. No pain, no game. No risk, no fun.
21.
WWCKD ? Hope is
the mother of lost battles No guts, no glory. No pain, no game. tiaaaa... No risk, no fun.
22.
Building DC3
23.
Building DC3
24.
DC net topology
25.
DC net topology ISP
1 ISP 2 DC2 , Poznań
26.
DC net topology ISP
1 ISP 2 ISP 1 ISP 2 DC2 , Poznań DC3 , Frankfurt
27.
DC net topology ISP
1 ISP 2 ISP 1 ISP 2 DC2 , Poznań DC3 , Frankfurt 2G, EoMPLS
28.
DC net topology ISP
1 ISP 2 ISP 1 ISP 2 DC2 , Poznań DC3 , Frankfurt 2G, EoMPLS 10G, DWDM
29.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS DNS $ host -t ns allegro.pl allegro.pl name server gtmdc3.allegro.pl. allegro.pl name server gtmdc2.allegro.pl.
30.
Global Traffic Manager DC2
, Poznań DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
31.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
32.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
33.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
34.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
35.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
36.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
37.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
38.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS request
39.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS response
40.
Global Traffic Manager DC2
, Poznań DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS req: www.allegro.pl HTTP traffic
41.
Global Traffic Manager DC2
, Poznań DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
42.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
43.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
44.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
45.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
46.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
47.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
48.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
49.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
50.
Global Traffic Manager DC2
, Poznań DNS req: www.allegro.pl DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl
51.
Global Traffic Manager DC2
, Poznań DC3 , Frankfurt www.allegro.pl F5 LTM F5 LTM F5 LTM F5 LTM F5 GTM F5 GTM F5 GTM F5 GTM www.allegro.pl DNS req: www.allegro.pl HTTP traffic
52.
Latency vs tennis
53.
SYN SYN/ACK ACK TCP/IP explained FIN ACK ACK DATA DATA ACK Control packets Data
packets bandwidth RTT / latency window size = 64 kBytes Bandwidth-delay Product BDP (bytes) = bandwidth (KBytes/sec) x RTT (ms)
54.
0,0005sec SYN SYN/ACK ACK TCP/IP explained FIN ACK 0,0005sec 0,0005sec ACK DATA DATA ACK 0,0005sec 0,0005sec 0,0005sec 0,0005sec 0,0005sec 0,0005sec Control packets Data
packets
55.
0,0005sec SYN SYN/ACK ACK TCP/IP explained FIN ACK 0,0005sec 0,0005sec ACK DATA DATA ACK 0,0005sec 0,0005sec 0,0005sec 0,0005sec 0,0005sec 0,0005sec Control packets Data
packets Scenario #1 • bandwidth = 10Gbit/sec • RTT / latency = 1 ms (1/1000 sec) • window size = 64 kBytes • data to transfer = 640 000 kBytes (1CD) What is the time to deliver CD from point A to B?
56.
0,0005sec SYN SYN/ACK ACK TCP/IP explained FIN ACK 0,0005sec 0,0005sec ACK DATA DATA ACK 0,0005sec 0,0005sec 0,0005sec 0,0005sec 0,0005sec 0,0005sec Control packets Data
packets Scenario #1 • bandwidth = 10Gbit/sec • RTT / latency = 1 ms (1/1000 sec) • window size = 64 kBytes • data to transfer = 640 000 kBytes (1CD) What is the time to deliver CD from point A to B? 1 sec !!! (640 000 kBytes) / (64 kBytes/ 1ms) = 1000 ms
57.
0,5sek SYN SYN/ACK ACK TCP/IP explained FIN ACK 0,5sek 0,5sek ACK DATA DATA ACK 0,5sek 0,5sek 0,5sek 0,5sek 0,5sek 0,5sek Control packets Data
packets
58.
0,5sek SYN SYN/ACK ACK TCP/IP explained FIN ACK 0,5sek 0,5sek ACK DATA DATA ACK 0,5sek 0,5sek 0,5sek 0,5sek 0,5sek 0,5sek Control packets Data
packets Scenario #2 • bandwidth = 10Gbit/sec • RTT / latency = 1 sek • window size = 64 kBytes • data to transfer = 640 000 kBytes (1CD) What is the time to deliver CD from point A to B?
59.
0,5sek SYN SYN/ACK ACK TCP/IP explained FIN ACK 0,5sek 0,5sek ACK DATA DATA ACK 0,5sek 0,5sek 0,5sek 0,5sek 0,5sek 0,5sek Control packets Data
packets Scenario #2 • bandwidth = 10Gbit/sec • RTT / latency = 1 sek • window size = 64 kBytes • data to transfer = 640 000 kBytes (1CD) What is the time to deliver CD from point A to B? 1000 sec !!! (640 000 kBytes) / (64 kBytes/1000ms) = 1000 sec
60.
800km distance...
61.
800km distance... storage data
base application / transactions AIX Oracle MySQLbackend daemons file transfers server deployment Linux
62.
800km distance... just 20ms...
63.
co-operation
64.
co-operation developers
65.
co-operation developers infrastructure
66.
co-operation developers infrastructure
67.
co-operation developers infrastructure
68.
Recipe for success Disaster
recovery ingredients
69.
Recipe for success
70.
Recipe for success
71.
Recipe for success
72.
Recipe for success
73.
Thank You, Q&A
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