Cloud platforms:

• Ceph (distributed object store and file system)
• Openstack (controls large pools of compute, storage, and networking resources)

Desktop backups in the cloud (I used all of these to form my opinion):

• Carbonite (works great, but doesn't do NAS)
• Livedrive (completely sucks, restore doesn't work for bunches of small files and it keeps interfering with Outlook by locking PST files)
• Backblaze (this is the one I use, works great and fast, but doesn't backup NAS, very large files or locked files a.k.a. your e-mails)
• SOS Online Backup (only tested shortly, way slower upload than CrashPlan)
• CrashPlan (upload could be faster, does locked files, does NAS, does unlimited versioning)

Getting Amazon S3 to work with AWS CLI from PHP

• Installing the AWS Command Line Interface
  • python --version (2.6.3 or later)
  • cd /tmp
  • wget https://s3.amazonaws.com/aws-cli/awscli-bundle.zip
  • unzip awscli-bundle.zip
  • sudo ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws
  • aws configure
    • Default region name: eu-central-1 (for Frankfurt)
    • Default output format: json
• /etc/sudoers: comment out "Defaults requiretty"
• /etc/sudoers: add: apache ALL = NOPASSWD: /usr/local/bin/aws
• Test from PHP: `sudo /usr/local/bin/aws s3 ls s3://s3-bucket-name/s3-path 2>&1`

Amazon S3 AWS CLI

• Determine size of bucket:  aws s3api list-objects --bucket s3-bucket-name --output json --query '[sum(Contents[].Size), length(Contents[])]'
• Location of configuration:  ~/.aws/config
• Sync: http://docs.aws.amazon.com/cli/latest/reference/s3/sync.html (e.g. aws s3 sync /root/synctest s3://s3-bucket-name/synctest)
• Remove: http://docs.aws.amazon.com/cli/latest/reference/s3/rm.html (e.g. aws s3 rm --recursive s3://s3-bucket-name/testroot/)

Mounting Amazon S3 as a Linux file system (CentOS 7)

• Exploring S3 based filesystems S3FS and S3Backer
• Please note s3fs will not work with Frankfurt as that requires AWS4-HMAC-SHA256
• Prepare for s3fs-fuse / s3backer:  yum -y install fuse fuse-devel gcc libstdc++-devel gcc-c++ curl-devel libxml2-devel openssl-devel mailcap make svn automake  zlib-devel expat-devel pkg-config
• s3fs-fuse (includes working installation instructions for the latest version)
• Instructions how to actually use s3fs (ignore the rest)
• s3backer
• Bitbucket S3QL
• RioFS

Private Cloud / Sync

• OwnCloud
  
• SeaFile
• Tonido
• FTPbox
• SparkleShare
• Zend.To
• FullSync
• iFolder
• SpiderOak
• Clearskies

Syncthing

• Syncthing (SyncTrayzor)
• Syncthing in Synology DSM (install the beta package from synocommunity, then use this page to get it to actually work)
• Yum install on CentOS (repositories)
  • Folder with settings: ~/.config/syncthing (edit config.xml to set the GUI address)
  • (CentOS 6:) Edit /etc/rc.d/init.d/syncthing to remove syncthing_ARGS (to make config.xml leading for the GUI address)
  • (CentOS 7:) Edit vi /usr/lib/systemd/system/syncthing\@.service to remove GUI address setting (alternative)
  • (CentOS 7:) Use to start: systemctl start syncthing@root
  • (CentOS 7:) As long as syncthing restart fails, use a crontjob to start it once per minute
• Build syncthing for Synology
  • Install development tools: ipkg install optware-devel (see this for wget-ssl problems)
  • wget --no-check-certificate https://github.com/syncthing/syncthing/archive/master.zip
  • ???
• Latest binary releases (use syncthing-linux-amd64 for 64 bit CentOS 6 & 7 and for Synology, the 32 bit version sucks)

Bittorent Sync

• Main page at labs.bittorrent.com
• Unofficial FAQ
• Install btsync on centos 7
• Linux Setup, modes of operation
• Steps to get it working on a Linux server:
  • Download and install btsync into /usr/sbin/btsync
  • Create init.d script btsync (CentOS init.d startup script for btsync)
  • make /etc/bitTorrentSync.cfg (Linux Setup, modes of operation), use valid dirs e.g. /etc/btsync
  • chkconfig -add btsync
  • ntsysv to enable auto start (check with chkconfig --list)
• There is an annoying bug in the Android version ignoring the WIFI only setting. A partial workaround is here: http://forum.bittorrent.com/topic/21474-bug-btsync-for-android-117-uses-cellular-data/
• Android KitKat 4.4 might also need this: SDFix: KitKat Writable MicroSD

Update Bittorent Sync - Synology version

• Install/update without starting the service
• cd /volume1/@appstore/bittorrentsync/
• chown root:root ./bin/btsync
• chmod a+s ./bin/btsync

Update Bittorent Sync - CentOS 6.5 x64

• Download BitTorrent-Sync_glibc23_x64.tar.gz from http://www.bittorrent.com/sync/download (e.g. to /root/tmp)
• (/root/tmp) tar -xvf BitTorrent-Sync_glibc23_x64.tar.gz
• (/root/tmp) service btsync stop
• (/root/tmp) cp btsync /usr/sbin/btsync or cp btsync /usr/bin/btsync
• (/root/tmp) service btsync start