Atlas:StorageRequirements

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Introduction

2008

The size is for a typical T2 with ~500 CPU’s

space token voms group to be associated space to be reserved namespace to be created
ATLASDATADISK /atlas/Role=production see below* /home/atlas/atlasdatadisk
# group: atlas/Role=production
user::rwx
group::rwx              #effective:rwx
group:atlas/Role=production:rwx         #effective:rwx
mask::rwx
other::r-x
default:user::rwx
default:group::rwx
default:group:atlas/Role=production:rwx
default:mask::rwx
default:other::r-x
ATLASMCDISK /atlas/Role=production 15TB
(60TB for 100% AOD) see below*
/home/atlas/atlasmcdisk
write permission only to atlas/Role=production
ATLASPRODDISK /atlas/Role=production 2TB (see below*) /home/atlas/atlasproddisk
write permission only to atlas/Role=production
ATLASGROUPDISK /atlas 6TB (see below*) /home/atlas/atlasgroupdisk/phys-exotics
write permission to atlas/Role=production, /atlas/phys-exotics/Role=production



/home/atlas/atlasgroupdisk/phys-higgs
write permission to atlas/Role=production, /atlas/phys-higgs/Role=production

/home/atlas/atlasgroupdisk/phys-susy
write permission to atlas/Role=production, /atlas/phys-susy/Role=production

/home/atlas/atlasgroupdisk/phys-beauty
write permission to atlas/Role=production, /atlas/phys-beauty/Role=production

/home/atlas/atlasgroupdisk/phys-sm
write permission to atlas/Role=production, /atlas/phys-sm/Role=production

ATLASUSERDISK /atlas 5TB (see below*) /atlas/user
write permission to all ATLAS users
ATLASUSERDISK /atlas/<locality>, <locality>=fr,ro,cn,jp,... sites to decide /atlas/<locality>/user
write permission to local ATLAS users

ATLAS top directory

  • below it is represented by /atlas. Each site should replace it according to their local structure.
    • eg. It is lapp-se01.in2p3.fr:/dpm/in2p3.fr/home/atlas for lapp.
  • this top directory is recommended to be configured so that an ordinary user cannot create a file/directory directly underneath.
  • the default ACL of this top directory is recommended to have write permission to /atlas/Role=production and /atlas/Role=lcgadmin.

ATLASDATADISK

  • Estimation of size comes later
  • group associated with the space token: /atlas/Role=production
  • namespace to be created: /atlas/atlasdatadisk
  • namespace acl:
# group: atlas/Role=production
user::rwx
group::rwx              #effective:rwx
group:atlas/Role=production:rwx         #effective:rwx
mask::rwx
other::r-x
default:user::rwx
default:group::rwx
default:group:atlas/Role=production:rwx
default:mask::rwx
default:other::r-x


ATLASMCDISK

  • 15TB for a typical T2 with ~500 CPU’s and ~100 TB disk
  • 60TB for a T2 requesting for 100% AOD.
  • The size may increase in case D1PD comes in this space.
  • Namespace ACL:
# group: atlas/Role=production
user::rwx
group::rwx              #effective:r-x
group:atlas/Role=production:rwx         #effective:rwx
mask::rwx
other::r-x
default:user::rwx
default:group::rwx
default:group:atlas/Role=production:rwx
default:mask::rwx
default:other::r-x

ATLASPRODDISK

  • 2TB for a typical T2 with ~500 CPU’s (the size is to be re-visited)
  • Namespace to be created and its ACL: /atlas/atlasproddisk, write permission only to /atlas/Role=production
# group: atlas/Role=production
user::rwx
group::rwx              #effective:rwx
group:atlas/Role=production:rwx         #effective:rwx
mask::rwx
other::r-x
default:user::rwx
default:group::rwx
default:group:atlas/Role=production:rwx
default:mask::rwx
default:other::r-x

ATLASGROUPDISK

  • 6TB for a typical T2 with ~500 CPU’s and ~100 TB disk
  • The size may decrease in case D1PD goes into ATLASMCDISK.
  • namespaces to be created and their ACLs:
    • /atlas/atlasgroupdisk, write permission only to /atlas/Role=production
    • /atlas/atlasgroupdisk/phys-exotics, write permission to atlas/Role=production, /atlas/phys-exotics/Role=production
    • etc...

ATLASUSERDISK

  • 5TB for a typical T2 with ~500 CPU’s and ~100 TB disk
  • namespaces to be created and their ACLs: /atlas/user, write permission to all ATLAS users
  • Usually, sites already have this namespace created by user analysis jobs so far.
  • example commands
    • dpns-mkdir lcg-se01.icepp.jp:/dpm/icepp.jp/home/atlas/user
    • dpns-setacl -m g:atlas:rwx,m:rwx,d:g:atlas:r-x lcg-se01.icepp.jp:/dpm/icepp.jp/home/atlas/user
    • dpns-getacl /dpm/icepp.jp/home/atlas/user
# file: /dpm/icepp.jp/home/atlas/user
# owner: root
# group: atlas
user::rwx
group::rwx              #effective:rwx
group:atlas/Role=production:rwx         #effective:rwx
mask::rwx
other::r-x
default:user::rwx
default:group::r-x
default:group:atlas/Role=production:rwx
default:mask::rwx
default:other::r-x


ATLASLOCALGROUPDISK

  • size to be decided by sites.
  • the resources not included in the pledge.
  • name space: /atlas/fr/user (or /atlas/ro/user, /atlas/cn/user, /atlas/jp/user, etc.)
  • ACL: write permission only to /atlas/fr group (or /atlas/ro, /atlas/cn, /atlas/jp correspondingly)
  • example ACL: