[aidenn0]

That looks like 13 drives per U (26 in 2U); weren't the BB pods 15 drives per U (60 in 4U)?

[chx]

Up to Storage Pod 5.0 they used 45 per 4U, 6.0 was 60 indeed but it was hanging out from the rack so it is understandable no major OEM has a chassis like that. 52 serviceable drives is not bad at all.