Definitely getting the new NAS box, the Synology DS1821+ but with the 10Gbps network card, 64GB RAM and 2 x 1TB SSDs for the SSD cache... and along with the 8 x 16TB HDDs in SHR with BTRFS I should have 112TB usable space with 1 parity and BTRFS metadata allowing any 2 drives to fail.
The old DS1817+ box... may well keep it as a local backup and very slowly upgrade it if no-one is interested in the whole thing at £1k. Reformatted to SHR + BTRFS would give me 28TB worth of local backup, which should be enough for a year or so... but as SHR I only need replace two of the 4TB drives with 16TB drives to get the storage to 40TB usable, and so the backup can grow alongside my actual usage.
Definitely getting the new NAS box, the Synology DS1821+ but with the 10Gbps network card, 64GB RAM and 2 x 1TB SSDs for the SSD cache... and along with the 8 x 16TB HDDs in SHR with BTRFS I should have 112TB usable space with 1 parity and BTRFS metadata allowing any 2 drives to fail.
The old DS1817+ box... may well keep it as a local backup and very slowly upgrade it if no-one is interested in the whole thing at £1k. Reformatted to SHR + BTRFS would give me 28TB worth of local backup, which should be enough for a year or so... but as SHR I only need replace two of the 4TB drives with 16TB drives to get the storage to 40TB usable, and so the backup can grow alongside my actual usage.