Dell FS7500 Технічний посібник - Сторінка 12

Переглянути онлайн або завантажити pdf Технічний посібник для Зберігання Dell FS7500. Dell FS7500 22 сторінки. Equallogic best practices series network attached storage
Також для Dell FS7500: Посібник (18 сторінок), Огляд (7 сторінок), Налаштування обладнання (2 сторінок)

Друкувати сторінку

5 Test results and analysis

For the combined block and file tests, we observed (see Figure 2) that IOPS increased as additional

clients were added. In the three and four array configurations, performance eventually started to level

off as the pool reached maximum I/O capacity. Adding an additional array to the mix allowed the same

number of clients to gain additional performance and also to scale further before starting to level off

again. Additionally, placing six arrays into a single pool demonstrated a very similar overall

performance profile to placing three arrays each into two separate pools and separating the file and

block I/O from one another.

Figure 2: Combined Block and File IOPS performance

Note: The results provided in this paper are intended for the purpose of comparing the specific

configurations used in our lab environment. The results do not portray the maximum capabilities of any

system, software, or storage.

In Figure 3, the IOPS performance is shown separately for both block and file I/O in the largest

configuration that used a single shared pool (six arrays total). In this example, the proportion of I/O

from file clients (NFS) is nearly double the I/O from block clients. This indicates that the additional

cache memory that is available on the FS7500 contributes to the increased number of I/O completed

by NFS clients. Caching requests locally on the FS7500 means the FS7500 can actually deliver greater

I/O read performance when it already has the requested data in memory or where it performs a

prefetch. In the case of I/O writes, the caching ability of the FS7500 allows it to more efficiently

commit data to the back-end SAN either by coalescing adjacent writes or absorbing bursts of I/O

requests from network clients.

BP1016

Integrating the Dell EqualLogic FS7500 into an Existing SAN