costing
Download
Skip this Video
Download Presentation
Costing

Loading in 2 Seconds...

play fullscreen
1 / 15

Costing - PowerPoint PPT Presentation


  • 103 Views
  • Uploaded on

Costing. Life 2 Model. Research (JISC Project) Application to whole operation of Library Attempts to cost common factors Does not take into account certain details. Life Model Formula. L = Complete lifecycle cost over time 0 to t C = Creation Aq = Acquisition I = Ingest

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Costing' - teal


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
life 2 model
Life 2 Model
  • Research (JISC Project)
  • Application to whole operation of Library
  • Attempts to cost common factors
  • Does not take into account certain details
life model formula
Life Model Formula

L = Complete lifecycle cost over time 0 to t

C = Creation

Aq = Acquisition

I = Ingest

BP = Bit-stream Preservation

CP = Content Preservation

Ac = Access

nlw digital archive equipment costs
NLW Digital Archive Equipment Costs
  • Servers in both Machine Rooms (Sun V490)
  • External Disk Array in both Machine Rooms (Sun Stortek 3200)
  • Tape Library in one Machine Room (Quantum Scalar i2000)
  • Optical Library in one Machine Room (Plasmon UDO1 G638)
  • Large Storage Array in one Machine Room
  • AMASS Storage Software
nlw digital archive support costs
NLW Digital Archive Support Costs
  • Server Support
  • Disk Array Support
  • Tape Library Support/Maintenance
  • Optical Library Support/Maintenance
  • AMASS Software Support
  • Solaris 10 Operating System Support
nlw digital archive storage costs
NLW Digital Archive Storage Costs
  • Tape Media
  • Tape Slots
  • Optical Media
  • Tape Drives – based on access patterns / insertion patterns
  • Optical Drives – based on access patterns / insertion patterns
  • Disk Storage Area – based on project sizes
nlw digital archive computing costs
NLW Digital Archive Computing Costs
  • Data duplicated to provide three versions of a file
  • Extra copy taken to comply with preservation best practice
  • Extra copy in Optical Library
  • Time to taken to copy data
  • If estimated to take a long time another drive in the libraries will help
nlw digital archive staff costs
NLW Digital Archive Staff Costs
  • Media takes time to prepare and is a manual process
  • Taking media off site and to the Copper Rooms
  • Bringing media back from the Copper Rooms and off site to check
  • Duplicating tape contents to temporarily replace off site tapes
  • Media Generation change
  • AMASS Storage Database Backups
nlw costing formulae media cost
NLW Costing FormulaeMedia Cost

Project Size (mb) = Number of Files * Estimated Average File Size (mb)

Number of Tapes (1 copy) = Project Size / 381468 mb

Number of Optical Cartridges (1 copy) = Project Size / 28661 mb

Tape Media Cost = (Number of Tapes * £23) * Number of Copies (4)

Tape Slot Cost (10 years) = Number of Tapes * £50 (only one copy is kept in tape library)

Media Cost = Tape Media Cost + Tape Slot Cost

Total Archive Size = Project Size(mb) * Number of Copies (4)

These figures only show the size and number of tapes for 1 copy. Remember there are four copies of the data.

nlw costing formulae insertion task time
NLW Costing Formulae Insertion Task Time

Md5 capture time (mins) = (Time taken to generate md5*Number of Files)/60

Transfer to tape (1 copy in mins) = ((Project Size (mb)/ Tape Drive Transfer Rate)/Number of Drives for project)/60

Optical Transfer is similar to Transfer to tape

nlw costing formulae insertion total time
NLW Costing FormulaeInsertion Total Time

Computer Time of insertion (Hours) = (Transfer to Tape * Number of Copies (4) + Md5 Capture Time)/60

Staff Time for insertion (Hours) = ((Number of Tapes*Preparation Time (10 mins))*Number of Copies (4)) + Time taken to move tapes to Copper Room (10 mins) + Time taken to move tapes offsite (45 mins)

nlw curation costs
NLW Curation Costs

6 Monthly Staff Curation Time (HOURS) = (Number of Tapes * Online copy check prep time) + ((Number of Tapes * Copper Room copy check prep time)+ Trip Time there and back) + ((Number of Tapes * Offsite copy check prep time) + Trip Time there and back)

6 Monthly Computer Curation Time (HOURS) = (Number of Tapes * Full Tape Read time((Size of Tape/Drive Transfer time)/60) ) + ((Number of Tapes * Full Tape Read time)*2 (Copper Room Copy)) + ((Number of Tapes * Full Tape Read time) *2 (Off site copy) )

forcasting
Forcasting
  • Assumptions
  • No “Crystal Ball”
  • Growth Rates
  • Equipment Costs
ad