White Papers

Dell Management Plug-in for VMware vCenter: Installation, Purchase, Licensing, and Upgrade
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6. Depending on the vCenter configuration, one of the following options displays:
 If resource pools are configured – On the Resource Pool page, select the pool
virtual servers to which the Dell Management Plug-in will be deployed.
 If resource pools are not configured – On the Hosts/Clusters page, select the
host or cluster to which the Dell Management Plug-in will be deployed.
7. If there is more than one datastore available on the host, the datastore page displays. Select
the location to store the Dell Management files and click Next.
8. Select the format in which you want to store the virtual disks.
a. Thick Provision Lazy Zeroed
A lazy-zeroed thick disk has all disk space allocated at the time of creation,
but each block is zeroed only on first write. This results in a shorter
creation time, but reduced performance the first time a block is written
to. Subsequent writes, however, have the same performance as on eager-
zeroed thick disks.
b. Thick Provision Eager Zeroed [Recommended]
An eager-zeroed thick disk has all space allocated and zeroed out at the
time of creation. This increases the time it takes to create the disk, but
results in the best performance, even on the first write to each block.
c. Thin Provision
Space required for a thin-provisioned virtual disk is allocated and zeroed
upon first write, as opposed to upon creation. There is a higher I/O cost
(similar to that of lazy-zeroed thick disks) during the first write to an
unwritten file block, but on subsequent writes thin-provisioned disks have
the same performance as eager-zeroed thick disks.