Table 1.

The Open Science Data Cloud (OSDC; in October 2013) consists of 7994 cores, 9.2 PB of raw storage and 5.7 PB of usable storage

All OSDC resources	Cores	Compute cores	Total RAM (TB)	Computed RAM (TB)	Raw storage (PB)	Usable storage (PB)
Open access clouds	3632	3168	13.9	12.9	4.4	2.6
Bionimbus PDC	2816	2664	11.0	10.9	2.5	1.5
Hadoop	1090	1030	3.5	3.2	1.5	1.1
Other resources	456	352	1.5	1.4	0.8	0.5
Total	7994	7214	29.9	28.4	9.2	5.7

This includes both the open-access Bionimbus Community Cloud and the controlled-access Bionimbus Protected Data Cloud (PDC). There is a data commons that is part of the open-access OSDC that consists of 1.4 PB of raw storage and 0.9 PB of usable storage. The Bionimbus PDC contains a data commons that contains about 0.5 PB of usable storage. The Bionimbus PDC can also access data from the open-access data commons. The other OSDC resources consist of a test bed, development machines, web servers, etc. During October 2013, there were about 150 active users out of a total of about 360 users. During October 2013, an average of 47% of the available core hours were used for the resources that were available for general users. Older resources were more highly used (86%), while newer resources were more lightly used (18%). The amount of usable space is less than the raw storage, since we make use of redundant array of independent disks (RAID) 5 and RAID 6 for GlusterFS and keep disks as hot spares.