Dell PowerVault MD3600i Manual do Proprietário descarregar pdf (Página 121)

Configuration: Disk Groups and Virtual Disks 121

The corresponding dynamic cache read prefetch setting and segment size

values that are typically well suited for the selected virtual disk I/O

characteristic type are populated in the

Dynamic cache read prefetch

field and the Segment size field

NOTE: If you selected the Custom option, select your preferred dynamic

cache read prefetch setting (enabled/disabled) and segment size (8 KB to

512 KB).

Click

Choosing an Appropriate Physical Disk Type

You can create disk groups and virtual disks in the storage array. You must

select the capacity that you want to allocate for the virtual disk from either

unconfigured capacity or free capacity available in the storage array. Then you

define basic and optional advanced parameters for the virtual disk.

With the advent of different physical disk technologies, it is now possible to

mix physical disks with different media types and different interface types

within a single storage array. In this release of MDSM, the following media

types are supported:

• Hard physical disk

• Solid State Disk (SSD)

Physical Disk Security with Self Encrypting Disk

Self Encrypting Disk (SED) technology prevents unauthorized access to the

data on a physical disk that is physically removed from the storage array. The

storage array has a security key. Self encrypting disks provide access to data

only through an array that has the correct security key.

The self encrypting disk or a security capable physical disk encrypts data

during writes and decrypts data during reads. For more information, see the

PowerVault Modular Disk Storage Manager online help topics.

You can create a secure disk group from security capable physical disks. When

you create a secure disk group from security capable physical disks, the

physical disks in that disk group become security enabled. When a security

capable physical disk is security enabled, the physical disk requires the correct

security key from a RAID controller module to read or write the data. All of

book.book Page 121 Tuesday, September 27, 2011 3:13 PM

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 291 292

Sem comentários

Dell PowerVault MD3600i Manual do Proprietário Página 121