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changes.mady.by.user Amedeo Perazzo

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New Version Current

changes.mady.by.user Amedeo Perazzo

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Old Policy

Space

Size

Backup

Lifetime

Comment

xtc

Unlimited

Tape archive

1 year

Raw data

hdf5

Unlimited

Tape archive

1 year

Data translated to HDF5

scratch

Unlimited

None

1 year

Analysis results and temporary data

User home

Unlimited

Disk + tape

Indefinite

User code

Tape archive

Unlimited

Two copies

10 years

Raw

data

Rationale for Switching to New Policy

The goal of the new policy based on three different storage classes was twofold:

  • Allow users to have easy access (ie on disk) to the most frequently used data for a longer period of time
  • Make better use of the LCLS storage resources

...

data

...

We do understand the new policy requires a more active participation by the users so we provided tools to help managing the data. For example, we made it much easier to restore data from tape and move data across storage classes.

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