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[2022-07-11: StaaS will be superseded by S3DF beginning in FY23.= Please refer to https://sdf.slac.stanford.edu/= public/doc for more information.]
Description: Storage as a Service (StaaS) is a SLAC sha= red file service operated by Scientific Computing Services (SCS) within the= OCIO division of Business and Technology Services (BTS). It is desig= ned for groups who need approximately 5TB to 75TB of shared Unix storage an= d is currently targeted at moderate science workloads and larger average fi= le sizes rather than hundreds of batch jobs and millions of small files (se= e quota information below). Access is available via NFS (versions 2 t= hrough 4) or an optional GPFS client, and is currently limited to the SLAC = network.
Status: In production. Established 10/1/2015 (FY1= 6).
Pricing: US$65 per terabyte per year during FY19 (10/1/= 2018 through 9/30/2019), with at least a 1-year commitment. The charg= e is based on disk allocation rather than disk usage and has a minimum requ= irement (see quota information below). Charges accumulate daily (to a= llow for mid-year adjustments in allocation) while billing is done quarterl= y in arrears. This means your October through December allocation is = billed in January, January through March is billed in April, and so forth.&= nbsp; The last billing may occur in September to accommodate the end of eac= h fiscal year. Pricing is reviewed before each new fiscal year, with = an intent to keep it as low possible and stable throughout the following ye= ar.
Quotas: The minimum starting disk quota is 5TB; the max= imum will vary according to available disk space. As long as you main= tain the minimum level, your disk quota may be increased or decreased in te= rabyte increments when needed, with rates being prorated from the date of c= hange. The default inode (file and directory) quota is 1 million inod= es per terabyte, which allows for an average file size of 1MB. A reas= onably higher inode quota is available for free upon request to allow for a= smaller average file size.
To Request Space: If interested in using StaaS, please = email unix-admin@slac.stanford.edu and provide the follow= ing information:
o Your name
o Your directorate and group/experiment name (to help us suggest a direc= tory path)
o The number of terabytes (5TB minimum) needed and an estimate for how l= ong (1 year minimum)
o A charge number for quarterly billings
o The hostname(s) or batch cluster(s) requiring read/write access
o The Unix username and groupname that will own the directory
o If you would like optional tape backups for your StaaS space, please s= pecify a retention period (how long a file must remain on tape after it's d= eleted from disk). The default retention period is 31 days; longer re= tentions will generally be more expensive due to higher tape counts. = NOTE: tape backups have a separate charge from StaaS. We can discuss = that with you when you make your request.
To Release Space: If you will no longer need your StaaS= space, please email unix-admin@slac.stanford.edu as earl= y as possible to aid in our capacity planning. Please be sure to migr= ate your data elsewhere (if you need to preserve it) before giving us your = permission to reclaim the space. Once you tell us to reclaim the spac= e, StaaS fees will stop accruing and we'll remove the space for reassignmen= t to other groups. Your final StaaS bill will appear at the next bill= ing cycle.
Questions or Changes: Please contact unix= -admin@slac.stanford.edu for any questions about StaaS or for any chang= es needed to your StaaS space.