VMware VIEW COMPOSER 2.5 - ARCHITECTURE Manual do Utilizador descarregar pdf (Página 25)

EMC Infrastructure for Virtual Desktops Enabled by EMC VNX, VMware vSphere 4.1,

VMware View 4.5, and VMware View Composer 2.5

Considering 1 GB for the delta disk, it requires approximately 6 GB for one linked clone.

VMware View 4.5 supports 512 linked clones from a single replica. To host 500 virtual

desktops, we need 3 TB. With the current VMFS version, the maximum size that is supported

is 2 TB-512 GB. This means that we need to split these into two datastores. To host 2,000

virtual desktops, we need eight datastores of 2 TB to allow additional space for growth. Thus,

we need 16 TB in total for the linked clones.

If linked clones are not used, it requires 25 GB per virtual machine in thick format or 18 GB

per virtual machine using thin disks.

This solution uses 200 GB Flash, 300 GB SAS, and 2 TB NL-SAS disks. The usable raw

capacities are 180 GB Flash, 268 GB SAS, and 1.8 TB NL-SAS.

With four Flash drives in RAID 10, 360 GB is dedicated for the replica with a RAID 5 mix of SAS

and NL-SAS, and it gives 37 TB. With a RAID 10 mix of SAS and NL-SAS, we have 16 TB. With

RAID 10, we use fewer spindles and that data does not grow much compared to user data.

With a dedicated datastore for the replica, the space that is required on the replica LUN is

approximately 39 GB for three virtual desktop pools. Any data accessed three times in a given

period normally resides in FAST Cache. To maximize the use of Flash, we elected to use it as

FAST Cache. Table 11 describes the drives used in this solution.

Table 11. Spindles used in this solution

Drive

Linked clone –

RAID 10

User data-

RAID 6

Hot spare

FAST Cache

Flash

NL-SAS

SAS

In a traditional desktop deployment, each machine would have a 20 GB hard disk for

deploying 2,000 desktops; requiring 2,000 hard disks.

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