Goals for SC4
[email protected]
hepsysman Oxford
5 Dec 2005
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
SC4 – timeline
• As far as most people are concerned, SC4
begins 1 April 2006.
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
Storage
• 80% of sites have SRM 1.1 by end Dec 05
– Already ~14 out of 17 – 82% 
• 100% to have SRM 1.1 by end Jan 06
• 40% to have 2.1 by end Feb 06
– Already ~8/17 (47%) DPM
– But should upgrade anyway, so perhaps 0/17
– (And we have more than 17 sites)
• 100% to have 2.1 by end Mar 06
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
Classic SEs
• … to have no Classic SEs by end Mar
• SE shutdown procedure:
1. Migrate to DPM; or
2. Shut down:
1.
2.
3.
4.
hepsysman
Warn VO – listing files they own
Prevent upload (publish 0 free?)
Wait
Pull the plug
Storage Middleware
Jens G Jensen
CCLRC/RAL
Tier 1 Storage
• Currently provides SRM (to disk and tape)
via dCache
• RAL’s tapestore will switch to CASTOR2
–
–
–
–
For HEP
Not using CASTOR 1 for prod’n
Tier 1 will use CASTOR2 SRM 2.1
By May/June… not by April
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
FTS
• All channels T1* by end Jan 06
• All T2 sites have FTS clients by end Jan 06
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
Transfers
• “Sustained transfers” to 20% sites by end
Dec 05
• “Sustained transfers” to 50% sites by end
Jan 05
• “Continuous transfers” to all (1 TB cont) by
end Feb
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
Transfer tests
• Coordinate with Tier 1
• Warn your networkers
• Test overnight
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
LFC
• Installed at 1 site per Tier 2 at end Dec 05
• Installed at 50% of sites end Jan 06
• All sites end Feb 06
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
VO Boxen
•
•
•
•
(Depends on which sites host which exp’t)
Installed at 1 site per Tier 2 mid Jan 06
At 50% mid Feb
All participating sites end Mar 06
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL
Some questions?
• How many boxen does a site need for SC4?
• How many sysadmins? Skills?
• SE
– Network: how much bandwidth/availability
– And hardware?
– And storage capacity?
hepsysman
Storage Middleware
Jens G Jensen
CCLRC/RAL