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Low random read IOPS intel dc s4500

Carmaa
Visitor

Low random read IOPS intel dc s4500

Hello,

i have very bad read performance on my new intel ssd. 
My configuration is:
HP proliant DL360e gen8 with Smart Array P222 controler.
Intel ssd dc s4500 960GB
64GB ram
2x Intel cpu

I have 2x HP SAS HDD 7200rpm(raid 0), 1x consumer Samsung SSD (raid 0) and 1x Intel s4500 (raid 0).

Operating system is intalled on SAS drives (Windows server 2016).

So my results are:

random read performance is low. Should be around 70 000 iops. Now 7253 iops. So cca 10x slower.

My controller settings:

Smart Array P222 in Slot 1
Bus Interface: PCI
Slot: 1
Serial Number: Confidential Info Erased
Cache Serial Number:
RAID 6 (ADG) Status: Enabled
Controller Status: OK
Hardware Revision: B
Firmware Version: 8.00
Rebuild Priority: Medium
Expand Priority: High
Surface Scan Delay: 15 secs
Surface Scan Mode: Idle
Queue Depth: Automatic
Monitor and Performance Delay: 60 min
Elevator Sort: Enabled
Degraded Performance Optimization: Disabled
Inconsistency Repair Policy: Disabled
Wait for Cache Room: Disabled
Surface Analysis Inconsistency Notification: Disabled
Post Prompt Timeout: 0 secs
Cache Board Present: True
Cache Status: OK
Cache Ratio: 85% Read / 15% Write
Drive Write Cache: Enabled
Total Cache Size: 512 MB
Total Cache Memory Available: 304 MB
No-Battery Write Cache: Enabled
Cache Backup Power Source: Capacitors
Battery/Capacitor Count: 1
Battery/Capacitor Status: OK
SATA NCQ Supported: True
Spare Activation Mode: Activate on drive failure
Controller Temperature (C): 88
Cache Module Temperature (C): 35
Capacitor Temperature (C): 26

 

Thanks for help.

3 REPLIES
HPSDMike
HPE Pro

Re: Low random read IOPS intel dc s4500

Check the status of the "SSD Smart Path" settings on the controller. It's most likely enabled on your SSD "arrays". Disable it and try again. 

https://support.hpe.com/hpsc/doc/public/display?docId=mmr_sf-EN_US000008113

 

I work for HPE. The comments in this post are my own and do not represent an official reply from the company. No warranty or guarantees of any kind are expressed in my reply.
Carmaa
Visitor

Re: Low random read IOPS intel dc s4500

Hello,

it helps, thank you.  Now is it better. But i have another question. Supports smart array p222 in raid 1 something like simultaneously read data from  two SSD? I cant find any info about it. 

 

HPSDMike
HPE Pro

Re: Low random read IOPS intel dc s4500

Is your question "Can you have two SSD drives configured as a RAID1?" If so, the answer is yes. The RAID array can only be as big as your smallest SSD drive (sounds like you are using different size/model drives). RAID1 is probably not likely to help your read speeds and will possibly hurt your write speeds. RAID1 is "mirroring" so it's more of a data protection thing. However, RAID 10 (striping AND mirroring) is likely to help both performance and data protection goals but you'll need at least four disks. With SSDs, you'l likely eventually reach the point where a given controller cannot drive any more performance. So, at some points, additional SSDs will no longer help performance on that controller. However, you should still have room to grow. 

I work for HPE. The comments in this post are my own and do not represent an official reply from the company. No warranty or guarantees of any kind are expressed in my reply.