The 2U miniDDP24DF is a shared storage DDP base system for SSDs. Its CPUs are specifically selected for very high performance in bandwidth and IOPs. It is developed for M & E companies where a limited number of seats work with very high quality video and film material in the 2K, 4K and 8K domain. The DDP can be filled with up to 24 SSDs. SSDs can be delivered in packs of 4 and 8. Per SSD8 pack performance increases with 2,3GB/s on reading. When the miniDDP24DF is completely filled with 3 x SSD8 packs the performance is 6,9 GB/s. SSD packs consists of 1, 2 or 4TB SSDs. For data protection the SSD packs are configured with RAID5.
There are 6 PCIe slots available. Ethernet cards to be used are 10, 25, 40 and 100 Gb/s, dual or single and with RJ45, SFP+, SR/LC, LR/LC, SFP28 and QSFP+ connections.
Both the total bandwidth and bandwidth per client scales up when 2 or more of these miniDDP24DFs are clustered. That is because desktops use iSCSI to access the units in parallel to read and write data.
A possible configuration is shown in the picture below.
One of the miniDDP24DF (any one) manages the AVFS file system. AVFS stands for Ardis Virtual File System.
The desktops know where to read from and where to write to and who has access when and how. It could be that the 6,9 GB/s bandwidth is required but not all that capacity is needed for active projects. In that case 3 SSD packs of 1 ,2 or 4 TB SSDs can be selected. In addition one of the PCIe slots can be used for an EX card to which a DDP16EX, or DDP24EX with HD packs can be connected. The SSDs are then used as a large cache and each file present on the SSDs have a duplicate on the spindles. So when a file is no longer in the cache because it has not been used for a while the file is automatically taken from the spindles. The video about the HyPerDDP12D explains how this cache/spindles tiering functions.
To extend the SSD capacity of course a miniDDP24EXR can also be connected.