Virtual desktop infrastructure (VDI) projects tend to be storage
input/output (I/O) intensive projects. As such, when implementing this,
it's important to consider computer space.
For example, a disk storage array supporting a virtual desktop infrastructure may be subject to this that move up to 1 MB of data each second at an access rate of nearly 10 I/Os per second. Due to the intensive nature of it, computer space must be able to perform at an acceptable level.
Storage for virtual desktop infrastructures must also have sufficient capacity to handle the needs of multiple virtual desktops. It replaces conventional ones. Whether a user signs in from an office workstation, a laptop, a tablet, or a personal computer at home, data is no longer stored on a local hard disk. Instead, the data is stored on a disk storage array associated with it.
Because virtual desktop infrastructures require high performance, high capacity computer space, companies implementing a VDI may want to use a blended data solution consisting of flash storage and traditional hard disk storage arrays.
All Flash Storage Arrays for Virtual Desktop Infrastructures
In order to appreciate the benefits of a hybrid solution, let's first look at the pros and cons of flash and traditional hard disk storage. Flash storage is similar to removable storage devices like memory cards and USB drives in that it has no moving parts (i.e., no spinning disk). Flash storage is dramatically faster than traditional hard disks which can only spin so fast. However, flash storage is also dramatically more expensive per gigabyte than traditional storage. Many companies find that the storage capacity that requires is cost-prohibitive.
Traditional Hard Disk Storage Arrays for Virtual Desktop Infrastructures
Traditional hard disks can satisfy the capacity needs of a virtual desktop infrastructure. However, they are less responsive than flash storage. The performance simply isn't up to par.
Hybrid Disk Storage Arrays for Virtual Desktop Infrastructures
Hybrid disk storage arrays blend both flash and traditional storage. With such a disk array, the most commonly accessed data resides on the high performance flash storage drive while less commonly accessed data is stored on traditional hard disks. This means that the most commonly used data can be served up quickly - in a flash - because it is stored on flash storage. Meanwhile, the rest of the data remains readily accessible on traditional hard disks. Should a user need to access data stored on a disk within the array, that data will be served albeit it a slower rate than the data residing on flash storage.
There are many ways to approach data storage within a virtual desktop infrastructure. Because they require a great deal of storage and performance, one of the best approaches is a hybrid approach. Hybrid disk storage arrays can deliver the high performance and massive storage capacities that they need at a significantly lower cost per gigabyte than an all flash storage array.
For example, a disk storage array supporting a virtual desktop infrastructure may be subject to this that move up to 1 MB of data each second at an access rate of nearly 10 I/Os per second. Due to the intensive nature of it, computer space must be able to perform at an acceptable level.
Storage for virtual desktop infrastructures must also have sufficient capacity to handle the needs of multiple virtual desktops. It replaces conventional ones. Whether a user signs in from an office workstation, a laptop, a tablet, or a personal computer at home, data is no longer stored on a local hard disk. Instead, the data is stored on a disk storage array associated with it.
Because virtual desktop infrastructures require high performance, high capacity computer space, companies implementing a VDI may want to use a blended data solution consisting of flash storage and traditional hard disk storage arrays.
All Flash Storage Arrays for Virtual Desktop Infrastructures
In order to appreciate the benefits of a hybrid solution, let's first look at the pros and cons of flash and traditional hard disk storage. Flash storage is similar to removable storage devices like memory cards and USB drives in that it has no moving parts (i.e., no spinning disk). Flash storage is dramatically faster than traditional hard disks which can only spin so fast. However, flash storage is also dramatically more expensive per gigabyte than traditional storage. Many companies find that the storage capacity that requires is cost-prohibitive.
Traditional Hard Disk Storage Arrays for Virtual Desktop Infrastructures
Traditional hard disks can satisfy the capacity needs of a virtual desktop infrastructure. However, they are less responsive than flash storage. The performance simply isn't up to par.
Hybrid Disk Storage Arrays for Virtual Desktop Infrastructures
Hybrid disk storage arrays blend both flash and traditional storage. With such a disk array, the most commonly accessed data resides on the high performance flash storage drive while less commonly accessed data is stored on traditional hard disks. This means that the most commonly used data can be served up quickly - in a flash - because it is stored on flash storage. Meanwhile, the rest of the data remains readily accessible on traditional hard disks. Should a user need to access data stored on a disk within the array, that data will be served albeit it a slower rate than the data residing on flash storage.
There are many ways to approach data storage within a virtual desktop infrastructure. Because they require a great deal of storage and performance, one of the best approaches is a hybrid approach. Hybrid disk storage arrays can deliver the high performance and massive storage capacities that they need at a significantly lower cost per gigabyte than an all flash storage array.
Stephanie Rose is a writer and expert in storage technology. She
enjoys sharing her knowledge on data storage and VDI hosting with her
readers. While writing this article she gathered resources from the
leading companies in data storage such as Tegile VDI hosting and Microsoft.
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