Dell PowerVault 221S 매뉴얼 - 페이지 9

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1. Powervault™ 220S & 221S Storage Enclosure

A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS

•

Not recommended:

•

Note: While this configuration is not recommended, it can be configured and utilized.

Online Transaction Processing Servers

Online Transaction Processing (OLTP) oriented servers are used in a number of

industries for the entry and retrieval of transactions for example, OLTP is common in

banking, airlines, mail-order, and supermarkets.

servers that require the maximum availability and redundancy possible.

I/O Profile

(Read/Write)

(Sequential/Random)

80/20

Random

Application

OLTP

Recommended:

•

PAGE 9

RAID 5 – Recommended for web servers that require maximum storage capacity

and only base data protection and performance.

RAID 50 – Recommended for those solutions that require a balance between

storage capacity and performance.

RAID 0 – Recommended for solutions where web server will be part of a group of

web servers that service a large internet portal and performance is the highest

concern. In this situation, availability and redundancy is handled by the cluster

group and does not need to happen at the disk level.

RAID 1 – Good solution for small websites which do not require high storage

capacity.

Concatenated - This solution is not recommended due to lack of redundancy and

data protection

• Table 2-9: OLTP General IO profile

Bandwidth

Moderate

• Table 2-10: OLTP RAID Guidelines

Concatenated

Recommended

RAID 10 – Since OLTP systems are very critical for most business, this RAID

configuration is highly recommended due to the high availability and

redundancy and good performance.

RAID 5 – Recommended for OLTP servers that require maximum storage

capacity and only base data protection and performance.

They are generally mission critical

Latency

IO Size

Sensitivity

2k-8k

Moderate

RAID Level

Not Recommended

VER A02

Growth

Criticality

Rate

Low

High

Possible

11/17/2005