3143d86b69
Updates for patchset 2 review comments Changed link depth of main Planning index and added some narrative guidance Added planning/openstack as sibling of planning/kubernetes Related additions to abbrevs.txt Added max-workers substitution to accomodate StarlingX/vendor variants Signed-off-by: Ron Stone <ronald.stone@windriver.com> Change-Id: Ibff9af74ab3f2c00958eff0e33c91465f1dab6b4 Signed-off-by: Stone <ronald.stone@windriver.com>
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29 lines
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.. lqo1552672461538
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.. _hard-drive-options:
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==================
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Hard Drive Options
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==================
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For hard drive storage, |prod| supports high-performance |SSD| and |NVMe|
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drives as well as rotational disks.
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To increase system performance, you can use a |SSD| or a |NVMe| drive on |prod|
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hosts in place of any rotational drive. |SSD| provides faster read-write access
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than mechanical drives. |NVMe| supports the full performance potential of |SSD|
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by providing a faster communications bus compared to the |SATA| or |SAS|
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technology used with standard |SSDs|.
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On storage hosts, |SSD| or |NVMe| drives are required for journals or Ceph
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caching.
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.. xrefbook For more information about these features, see |stor-doc|: :ref:`Storage on Storage Hosts <storage-hosts-storage-on-storage-hosts>`.
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For |NVMe| drives, a host with an |NVMe|-ready BIOS and |NVMe| connectors or
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adapters is required.
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To use an |NVMe| drive as a root drive, you must enable |UEFI| support in the
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host BIOS. In addition, when installing the host, you must perform extra steps
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to assign the drive as the boot device.
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