diff --git a/power/models/available_host_capacity.go b/power/models/available_host_capacity.go
index 1b4ec156..0aed652d 100644
--- a/power/models/available_host_capacity.go
+++ b/power/models/available_host_capacity.go
@@ -21,7 +21,7 @@ type AvailableHostCapacity struct {
 	// Core capacity of the host
 	Cores *AvailableHostResourceCapacity `json:"cores,omitempty"`
 
-	// Memory capacity of the host (in MB)
+	// Memory capacity of the host (in GB)
 	Memory *AvailableHostResourceCapacity `json:"memory,omitempty"`
 }
 
diff --git a/power/models/available_host_resource_capacity.go b/power/models/available_host_resource_capacity.go
index ba0e0591..9f0f852d 100644
--- a/power/models/available_host_resource_capacity.go
+++ b/power/models/available_host_resource_capacity.go
@@ -8,8 +8,10 @@ package models
 import (
 	"context"
 
+	"github.com/go-openapi/errors"
 	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
+	"github.com/go-openapi/validate"
 )
 
 // AvailableHostResourceCapacity available host resource capacity
@@ -17,12 +19,31 @@ import (
 // swagger:model AvailableHostResourceCapacity
 type AvailableHostResourceCapacity struct {
 
-	// available
-	Available float64 `json:"available,omitempty"`
+	// total
+	// Required: true
+	Total *float64 `json:"total"`
 }
 
 // Validate validates this available host resource capacity
 func (m *AvailableHostResourceCapacity) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.validateTotal(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *AvailableHostResourceCapacity) validateTotal(formats strfmt.Registry) error {
+
+	if err := validate.Required("total", "body", m.Total); err != nil {
+		return err
+	}
+
 	return nil
 }
 
diff --git a/power/models/host_capacity.go b/power/models/host_capacity.go
index 9ded7f72..506c43e5 100644
--- a/power/models/host_capacity.go
+++ b/power/models/host_capacity.go
@@ -21,7 +21,7 @@ type HostCapacity struct {
 	// Core capacity of the host
 	Cores *HostResourceCapacity `json:"cores,omitempty"`
 
-	// Memory capacity of the host (in MB)
+	// Memory capacity of the host (in GB)
 	Memory *HostResourceCapacity `json:"memory,omitempty"`
 }
 
diff --git a/power/models/host_group.go b/power/models/host_group.go
index 91c21cd7..2effa932 100644
--- a/power/models/host_group.go
+++ b/power/models/host_group.go
@@ -33,10 +33,10 @@ type HostGroup struct {
 	// Name of the host group
 	Name string `json:"name,omitempty"`
 
-	// Name of the workspace owning the host group
+	// ID of the workspace owning the host group
 	Primary string `json:"primary,omitempty"`
 
-	// Names of workspaces the host group has been shared with
+	// IDs of workspaces the host group has been shared with
 	Secondaries []string `json:"secondaries"`
 }
 
diff --git a/power/models/host_group_create.go b/power/models/host_group_create.go
index ddd5fc9f..48f3e169 100644
--- a/power/models/host_group_create.go
+++ b/power/models/host_group_create.go
@@ -28,7 +28,7 @@ type HostGroupCreate struct {
 	// Required: true
 	Name *string `json:"name"`
 
-	// List of workspace names to share the host group with (optional)
+	// List of workspaces to share the host group with (optional)
 	Secondaries []*Secondary `json:"secondaries"`
 }
 
diff --git a/power/models/host_group_share_op.go b/power/models/host_group_share_op.go
index fe1f2c99..f90d9d17 100644
--- a/power/models/host_group_share_op.go
+++ b/power/models/host_group_share_op.go
@@ -19,10 +19,10 @@ import (
 // swagger:model HostGroupShareOp
 type HostGroupShareOp struct {
 
-	// List of workspace names to share the host group with
+	// List of workspaces to share the host group with
 	Add []*Secondary `json:"add"`
 
-	// A workspace name to stop sharing the host group with
+	// A workspace ID to stop sharing the host group with
 	Remove string `json:"remove,omitempty"`
 }
 
diff --git a/power/models/host_resource_capacity.go b/power/models/host_resource_capacity.go
index 4814c505..6f1943e7 100644
--- a/power/models/host_resource_capacity.go
+++ b/power/models/host_resource_capacity.go
@@ -8,8 +8,10 @@ package models
 import (
 	"context"
 
+	"github.com/go-openapi/errors"
 	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
+	"github.com/go-openapi/validate"
 )
 
 // HostResourceCapacity host resource capacity
@@ -18,20 +20,81 @@ import (
 type HostResourceCapacity struct {
 
 	// available
-	Available float64 `json:"available,omitempty"`
+	// Required: true
+	Available *float64 `json:"available"`
 
 	// reserved
-	Reserved float64 `json:"reserved,omitempty"`
+	// Required: true
+	Reserved *float64 `json:"reserved"`
 
 	// total
-	Total float64 `json:"total,omitempty"`
+	// Required: true
+	Total *float64 `json:"total"`
 
 	// used
-	Used float64 `json:"used,omitempty"`
+	// Required: true
+	Used *float64 `json:"used"`
 }
 
 // Validate validates this host resource capacity
 func (m *HostResourceCapacity) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.validateAvailable(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.validateReserved(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.validateTotal(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.validateUsed(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *HostResourceCapacity) validateAvailable(formats strfmt.Registry) error {
+
+	if err := validate.Required("available", "body", m.Available); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *HostResourceCapacity) validateReserved(formats strfmt.Registry) error {
+
+	if err := validate.Required("reserved", "body", m.Reserved); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *HostResourceCapacity) validateTotal(formats strfmt.Registry) error {
+
+	if err := validate.Required("total", "body", m.Total); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *HostResourceCapacity) validateUsed(formats strfmt.Registry) error {
+
+	if err := validate.Required("used", "body", m.Used); err != nil {
+		return err
+	}
+
 	return nil
 }
 
diff --git a/power/models/secondary.go b/power/models/secondary.go
index 63bca7d5..a312c5ea 100644
--- a/power/models/secondary.go
+++ b/power/models/secondary.go
@@ -22,7 +22,7 @@ type Secondary struct {
 	// Name of the host group to create in the secondary workspace
 	Name string `json:"name,omitempty"`
 
-	// Name of the workspace to share the host group with
+	// ID of the workspace to share the host group with
 	// Required: true
 	Workspace *string `json:"workspace"`
 }