Caught a couple of blog entries highlighting real-world success with the Domino 8.5 DAOS (Domino Attachment and Object Service) feature, with 25-50% savings in their real-world environments.

Dutch partner Eniac Essentials posted a story of a customer with 7000 Domino users and what was 4 TB of mail...

We where able to reduce the storage on the archive servers with around 750GB in total, this cleared the way to archive mailservers again an perform the same DAOS action again on newly archived files and added storage making 400GB of space in the mailservers.

    * Arch01 uses 950 GB for NSF data and 325 GB for DAOS, while the logical size of all NSF files is 1,7 TB
    * Arch02 uses 1430 GB for NSF data and 275 GB for DAOS, while the logical size of all NSF files is 2,0 TB

Since we now use DAOS we can change our back-up strategy, total back time is reduces with several hours in total.
The University of Windsor (Canada) also posted a "DAOS Rocks!" blog entry, including smiling faces of administrators:
1.3 GB on a server with DAOS versus 3.1 GB on a server without DAOS. Just by converting the mail file replica on TRITON to ODS 51 and enabling DAOS on it (compact -c), I brought the size down to 1.3 GB (see fig2). I just recovered 1.8 GB of disk space from one mail file.  ...

Overall, we recovered about 200 GB of storage space on each clustered server after implementing DAOS. 3 x 200 GB, that's 600 GB of space back to the pool.  ...

After we implemented DAOS on all mail archives on HADES, we recovered 600 MB of storage space on that partition. That's more that 1/3 of the space previously used to store these files.
We're turning some of these into reference stories, and am always happy to have additional real world successes to highlight.  What's yours?

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  1. 1  Steve Cogan https://www.ibm.com/dogear/html?tag=daos&lang=en |

    Really good to see those numbers, I've put together a few of the others you've posted in the same place - dogear - via IBM.com in the link above.

  1. 2  Craig Brown http://www.uwindsor.ca |

    In the University of Windsor success story, the recovery on HADES should be 600GB, not 600MB - my colleague made a typo :)

  1. 3  Frédéric Fanchamps  |

    Small company (90 people).

    Paperless organized around Lotus Notes electronic "files".

    7.02 => 8.5 last weekend. DAOS on.

    Lot of gig's spared.

    Fred

  1. 4  Lindon Flood  |

    We are keen to use DAOS for a different reason. We have a document management system in Notes that is rapidly approaching the 64Gb limit on nsf file size. By moving attachments off to the DAOS store, the physical nsf file is much smaller. Although we havent taken it into production yet, we have tested it to a logical file size of 90Gb with no apparent problems.

  1. 5  Rob Breault http://www.wcpss.net |

    SD1: 15K+ mail files, 40.7 GB -> 30.5 GB (DAOS = 5.4 GB) resulting in 4.8 GB savings...

    D8: 2,300+ mail files, 184 GB -> 49.1 GB (DAOS = 59.4 GB) resulting in 75.5 GB saving...

  1. 6  Irv Schor  |

    Built a test server with about 950GB of mail data. Prepped the files and ran DAOS. Down to about 500GB for a 450GB savings. x2 in a clustered environment on a SAN and this is great. Only concern is backup/restore situations for individual files from a point in time. Does anyone have a list of vendors that have APIs designed for this? Seems like with all of the DAOS/000x folders there might be a lot to restore to rebuild a mail.nsf from a point in time?