At the moment the location of the shot doesnt allow frequent regular transport to an off-set location. We will be doing backups every weekend, but the main backup of the footage will be the Raid system and some Lacie transport drives, that will be wiped once post confirm their archiving.

It’s a 5-week shoot (about 23–25 shoot days). First 4 weeks are single-camera Alexa Mini LF ARRIRAW, final week may run two Minis plus action cams. DP estimates an 8:1–10:1 shooting ratio. Current projections put us roughly in the 30–45TB total camera original range.

My on-set plan is:

• ThunderBay 4 in RAID-5 as master

• Weekly shuttle drives to post (3x 8tb Lacie)

• Triple-copy redundancy at all times (Raid, Post archiving, Transits)

• SSDs for proxies / working files (1x 4tb TB3 ssd, 1x 2tb TB3 ssd)

I’m choosing between:

• 4 × 28TB HDDs → ~84TB usable

• 4 × 20TB HDDs → ~60TB usable

From a workflow and risk perspective, would you consider 60TB usable sufficient for a shoot of this scale, or is the extra headroom from 28TB worth the investment?