---
title: kSCSIProtocolFeature_GetMaximumLogicalUnitNumber
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1638592-anonymous/kscsiprotocolfeature_getmaximumlogicalunitnumber
---

# kSCSIProtocolFeature_GetMaximumLogicalUnitNumber

## Declaration

```occ
kSCSIProtocolFeature_GetMaximumLogicalUnitNumber = 5
```

## Discussion

Discussion If the SCSI Protocol Services Driver supports logical units, it will report the maximum addressable ID that it supports in the UInt32 pointer that is passed in as the serviceValue. If only one unit is supported, the driver should return false for this query.