Dell PowerVault MD3220 Series Technisches Handbuch - Seite 40

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Technical Guide Book for PowerVault MD3200MD3220

Configuration Guidelines

The MD3200 and MD3220's extensive configuration flexibility enables customized performance tuning,

maximum capacity utilization and the highest data protection to support application servers with vastly

different requirements. A single storage array can concurrently support multiple RAID levels (0, 1, 5, 10

and 6), multiple drive technologies (SSD, SAS and near-line SAS), multiple and various disk group sizes, and

one or more virtual disks per disk group.

Below are general configuration rules for MD3200 series of arrays.

Up to 8 direct attached servers with single I/O paths to a dual controller storage array

Up to 4 direct attached servers with redundant I/O paths to a dual controller storage array

Up to 96 total drives consisting of SSD, SAS and/or near-line SAS drives per storage system

SSD drives are limited to a single shelf (12 drives for a MD3200 or 24 drives for a MD3220)

MD1200 and/or MD1220 storage enclosures can be add to a MD3200 or MD3220 storage array for expansion

up to 96 total hard drives

Up to 30 hard disk drives per disk group in a RAID 5 and RAID 6

Up to 96 hard disk drives per disk group in a RAID1/10

Each disk group can be configured as RAID level 0, 1, 5, 10 or 6.

Disk groups with different RAID levels can coexist in a single storage system.

Disk groups are comprised of either SSD or SAS drives. A given disk group cannot have both SSD and SAS

drives.

Up to 256 virtual disks (LUNs) per storage array

Each virtual disk can support 8 snapshots, with a maximum of 128 snapshots per storage array.