Google Education – access infrastructure guide User Manual
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Minimum standards for accessing Google cloud services
The table below lists the minimum speed you need per concurrent user for them to have a
minimally acceptable experience. In summary
Per
concurrent user
you will need between 64kbps to 1Mbps depending on what services your
users use. Simple formula is:
TBWx = (%C * CCUx * SBWx)
1
+ (%C * CCUx * SBWx)
2
+......+(%C * CCUx * SBWx)
n
• TBWx = Total BW at level X of your network
• CCUx = Number of concurrent users at level X of your network
• %C = Percentage of concurrent users using a particular service at level x of your network
• SBWx = Recommended Kbps based on the service (see table below)
• n = number of services being accessed at level x of your network
The user experience will also be greatly affected by latency to Google’s servers,
Google Apps
Service
12Kbps connection
32Kbps connection
64Kbps connection
128Kbps +
connection
Gmail
2 min to load
if at all
Initial page
8-20 seconds
full load > 1 Min
- full load 2 - 5s
Better than 64kbs
Chat in Gmail
Will not load
> 1 Min to load if ever
Loads in 4 - 10s
Better than 64kbs
Docs /
spreadsheet
(Open doc)
Will not load
- Initial page 5-20s
- full load > 1 Min
4 - 10s
Better than 64kbs
Docs /
Spreadsheets
(collaborative
editing)
Will not load
Noticeably slower
for edits to show
compared to 64K
Changes showed
up quick enough
for it to simulate a
conversation i.e real
time
Better than 64kbs
Site editing
No test
No test
Text page loads in
3 - 5 secs, Editors
load about the same
Image load of 385KB
jpeg file took ~1Min
Text page loads in
2 - 4 secs. Editors
load about the same
Image load of 385KB
jpeg file took ~25secs
Slides
4 - 10 s Speed is just
about manageable for
editing
better than 64kbps
Hangouts
N/A
N/A
Audio Only : 35kbps
up/down
z
Drive
4 - 8 s
Speed is just about
manageable for
loading drive listings
better than 64kbps
Youtube
Chromebooks
& Tablets