How to set up FZK for LHCb (v0.1)
Evaluation by
Maarten Litmaath (CERN)
References
Amount of disk to be provided
Inter-site I/O rates (to/from space token)
T1<-T0 |
6.3 MB/s |
to |
LHCb_BUFFER |
T1<-T1 |
11.6 MB/s |
to |
LHCb_DST, LHCb_MC_DST |
T1<-T2 |
0.2 MB/s |
to |
... |
|
|
|
|
T1->T2 |
11.4 MB/s |
from |
LHCb_M-DST, LHCb_MC_M-DST, LHCb_DST, LHCb_MC_DST |
T1->T1 |
8.8 MB/s |
from |
LHCb_M-DST, LHCb_MC_M-DST |
Buffers to be considered
- WAN buffer
- LAN buffer : "pin" raw data for a few days: 3d * 6.3 MB/s = 1.6 TB
Space token sizes for FZK and total, corresponding storage class
Real and MC data together, I/O rates
LHCb_BUFFER |
16 |
T1D1 |
6.3 MB/sec in from T0 |
6.3 MB/sec out to tape |
|
6.3 MB/sec out to reco jobs |
3.6 MB/sec in from reco |
|
(320/560*6.3) |
|
|
3.6 MB/sec out to tape |
|
3.6 MB/sec out to stripping |
|
|
|
|
|
TOTAL |
|
|
9.9 MB/s in |
19.8 MB/s out |
LHCb_M-DST |
39 |
T1D1 |
XXX MB/sec in from stripping |
XXX MB/sec out to tape |
|
8.8 MB/sec out to T1 |
|
3.0 MB/sec out to T2 |
|
XXX MB/sec out to analysis |
|
|
|
|
|
TOTAL |
|
|
XXX MB/s in |
XXX MB/s out |
LHCb_DST |
111 |
T0D1 |
11.6 MB/sec in from T1 |
XXX MB/sec out to analysis |
|
8.4 MB/sec out to T2 |
|
|
|
|
|
TOTAL |
|
|
XXX MB/s in |
XXX MB/s out |
LHCb_USER |
15 |
T1D1 |
XXX MB/sec in from analysis |
XXX MB/sec out to analysis |
|
XXX MB/sec out to tape |
|
|
|
|
|
TOTAL |
|
|
XXX MB/s in |
XXX MB/s out |
--
FlaviaDonno - 05 Feb 2007
This topic: LCG
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Topic revision: r2 - 2007-02-06 - FlaviaDonno