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Documentation #2273

closed

basic reliability models

Added by Anonymous about 12 years ago. Updated over 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Category:
OSD
Target version:
-
% Done:

0%

Tags:
Backport:
Reviewed:
Affected Versions:
Pull request ID:

Description

1. construct a probabilistic model for data loss in 1, 2, and 3 copy systems, assuming independent failures
2. plug in standard disk/ctlr/cpu/nic/unrecoverable read error rates
3. compute expected (not probability of) data loss
4. compare these with 2 and 3 copy raid mirroring, 5+1 parity, 5/7 erasure coding

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 #1

Updated by Anonymous about 12 years ago

  • Estimated time set to 80:00 h
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 #2

Updated by Zac Dover over 4 years ago

  • Status changed from New to Closed

This bug has been judged too old to fix. This is because either it is either 1) raised against a version of Ceph prior to Luminous, or 2) just really old, and untouched for so long that it is unlikely nowadays to represent a live documentation concern.

If you think that the closing of this bug is an error, raise another bug of a similar kind. If you think that the matter requires urgent attention, please let Zac Dover know at .

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