7.0

Table Of Contents
n For Serial ATA (SATA), a disk connected through supported SAS controllers or supported
on-board SATA controllers. SATA disks are considered remote, not local. These disks are not
used as a scratch partition by default because they are seen as remote.
Note You cannot connect a SATA CD-ROM device to a virtual machine on an ESXi host. To
use the SATA CD-ROM device, you must use IDE emulation mode.
Storage Systems
For a list of supported storage systems, see the
VMware Compatibility Guide
at http://
www.vmware.com/resources/compatibility. For Software Fibre Channel over Ethernet (FCoE), see
Installing and Booting ESXi with Software FCoE.
ESXi Booting Requirements
vSphere 7.0 supports booting ESXi hosts from the Unified Extensible Firmware Interface (UEFI).
With UEFI, you can boot systems from hard drives, CD-ROM drives, or USB media.
vSphere Auto Deploy supports network booting and provisioning of ESXi hosts with UEFI.
ESXi can boot from a disk larger than 2 TB if the system firmware and the firmware on any add-in
card that you are using support it. See the vendor documentation.
Storage Requirements for ESXi 7.0 Installation or Upgrade
For best performance of an ESXi 7.0 installation, use a persistent storage device that is a minimum
of 32 GB for boot devices. Upgrading to ESXi 7.0 requires a boot device that is a minimum of
8 GB. When booting from a local disk, SAN or iSCSI LUN, at least a 32 GB disk is required to
allow for the creation of system storage volumes, which include a boot partition, boot banks, and
a VMFS-L based ESX-OSData volume. The ESX-OSData volume takes on the role of the legacy /
scratch partition, locker partition for VMware Tools, and core dump destination.
Other options for best performance of an ESXi 7.0 installation are the following:
n A local disk of 128 GB or larger for optimal support of ESX-OSData. The disk contains the boot
partition, ESX-OSData volume and a VMFS datastore.
n A device that supports the minimum of 128 terabytes written (TBW).
n A device that delivers at least 100 MB/s of sequential write speed.
n To provide resiliency in case of device failure, a RAID 1 mirrored device is recommended.
Note GB units are 2^30 bytes or 1024*1024*1024 byte multiples.
Legacy SD and USB devices are supported with the following limitations:
n SD and USB devices are supported for boot bank partitions. For best performance, also
provide a separate persistent local device with a minimum of 32 GB to store the /scratch and
VMware Tools partitions of the ESX-OSData volume. The optimal capacity for persistent local
devices is 128 GB. The use of SD and USB devices for storing ESX-OSData partitions is being
deprecated.
VMware ESXi Installation and Setup
VMware, Inc. 15