Parallels Cloud Server 6.0 comes with two major new features:
• Parallels Cloud Storage. Parallels Cloud Storage transforms low-cost commodity storage
hardware and network equipment into a protected enterprise-level storage, like SAN and NAS.
It is optimized for storing virtual machines and Containers, providing replication, high-availability,
and self-healing features for your data.
Warning: Parallels Cloud Storage has redundancy built in, so you should avoid running Parallels Cloud
Storage on redundant types of RAID like 1, 5, or 6 over local storage. In this case, a single write
operation may affect a significant number of HDDs resulting in very poor performance. For example, for
3 Parallels Cloud Storage replicas and RAID5 on servers with 5 HDDs each, a single write operation
may result in 15 I/O operations. For recommendations on optimal local storage configurations, consult
the Parallels Cloud Storage Administrator's Guide.
• New Container-in-an-image-file layout. The new Container-in-an-image-file layout is a
replacement for the obsolete VZFS layout. The new layout has been redesigned to store all files
in a single image, enabling easy Container migrations and backups and improving server
performance.
During the upgrade, the installer does not upgrade your system to be compatible with these new
features. You need to manually configure the system to start using them:
• To learn how to set up a Parallels Cloud Storage cluster and move your Containers and virtual
machines to it, consult the Parallels Cloud Storage User's Guide.
• For detailed information on how to upgrade your Containers to use the new layout, see
Creating Containers with the New Layout (p. 20).
Note: Both using Containers with the new layout and storing them in a Parallels Cloud Storage cluster
requires that the /vz partition be formatted as ext4. Notice that remounting the /vz partition formatted
with another file system (e.g., ext3) as ext4 is not enough, and you need to convert the partition to
enable all ext4 features once the upgrade is complete.
In This Chapter
Creating Containers with the New Layout................................................................ 20
Converting VZFS Containers to the New Layout ...................................................... 21
HAPTER
Configuring the Upgraded System
(104 paginas)
(35 paginas)
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