Using Sans and NAS: Help for Storage Administrators by W. Curtis Preston

Using Sans and NAS: Help for Storage Administrators



Using Sans and NAS: Help for Storage Administrators epub

Using Sans and NAS: Help for Storage Administrators W. Curtis Preston ebook
Page: 226
Publisher: O'Reilly Media, Incorporated
ISBN: 9780596001537
Format: pdf


Using SAN/NAS will require a storage administrator in many cases. Customers can purchase the SAN together with the NAS to support file-level disk capacity, or delay the NAS system purchase until file-level management is required. For backup then this means that there will continue to be on-premises applications connecting to on-premises storage, either locally attached to those servers or via a shared storage infrastructure like a SAN or NAS. Organizations that use cloud storage as an external service have essentially three areas in which they can use cloud storage--cloud storage for backup data, cloud storage for archive data, cloud storage for primary storage, or a combination of the three. While traditional SAN and NAS arrays use command line interfaces (CLIs) or SMI-S API to automate certain operations, Software Defined Storage usually uses REST APIs that are much simpler to use and integrate. Because the traditional SAN and NAS storage devices are limited in scalability, they usually serve a single purpose, and typically only one administrator or a very limited number thereof. In this article we will discuss the basics of using storage area network (SAN) storage on vSphere and the factors administrators should consider when planning a shared SAN storage deployment. The first thing to look at when debating if you are using a SAN or a NAS is how the operating system sees the storage. Does the operating system see the storage as being on a remote computer? VSphere supports It is possible to use NAS and SAN-based storage products with vSphere, but in this article we will consider only SAN, or block-based devices. This includes Storage suppliers have worked hard to add features that directly support vSphere deployments. Storage: knowledge of storage administration and the concepts of file systems, disk partitions, mounts, quotas, mirroring and sizing. €� Expert knowledge of NAS, DAS, SAN (fabric attached architectures). Using LVM will allow for flexible storage assignment and snapshots, but most filesystems only support growing and do not offer shrinking features.

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