600 GB drives are really 1 TB?

I'm looking at some disk output from an EMC VNXe 3300 (storagecheck_-a) and I'm really really confused.

A disk claims to be a 600 GB disk (red), but the size (green) is 1 TB. All the reference data for the TLA number say it's a 600 GB drive!

What am I missing?

I've got 8 of these! Four of the 8 are contributing vault pieces, the others aren't being used. 7 are at firmware ES0E, one at ES0F.

NeoMain-2.4.3.21886-MAGNUM-RETAIL

==========================================================

## Disk:
##  Obj Key:                          06:00:00:00:05:00:00:00:01:00:00:00:01:00:00:03
##  Slot number:                      1
##  Bind Signature:                   0
##  Type:                             NEO_DISK_TYPE_SAS
##  Max speed:                        6000000000
##  Revolutions Per Minute:           15000
##   Vendor information:
##    ID:                             SEAGATE
##    Product ID:                     STE60005 CLAR600
##    Product Revision:               ES0E
##    DG part number:                 DG118032656
##    Serial Number:                  6SL2JE73
##    TLA Number:                     005049274
##   Capacity:
##    Physical:                       1125768576
##    User:                           1024671104
##    Private space:                  101097472
##    Unusable space:                 0
##   State:
##    Percent Zeroed:                 255
##    Zero Mark:                      9223372036854775807
##    Dead Reason:                    NEO_DISK_DEAD_REASON_ALIVE
##    Is an expansion disk:           false
##    Is bound as hot spare:          false
##    Is observed from loop A:        true
##    Is observed from loop B:        true
##    Is removed from loop A:         false
##    Is removed from loop B:         false
##    Is requested bypass on loop A:  false
##    Is requested bypass on loop B:  false
##    Is fault LED on:                false
##    Is spare active:                false
##    Is proactive copying:           false
##    Does need format:               false
##    Is removed:                     false
##    Is missing:                     false
##    Is powering up:                 false
##    Is formating:                   false
##    Is binding:                     false
##    Is bound unassigned:            true
##    Is bound assigned:              false
##    Is bound assign enabled:        false
##    Is rebuilding:                  false
##    Is equalizing:                  false
##    Is unsupported:                 false
##    Is expanding:                   false
##    Is hot spare ready:             false
##    Is zeroing:                     false
##    Is probation:                   false
##    Is foreign:                     false
##    Is faulted:                     false
##    Is Self Encrypting Drive:       false
##    Is SED locking enabled:         false
##    Is SED region locked:           false