MSA 2052 Auto-Tiering vs ReadCache on both controllers
I'm currently reconfiguring our 2052, we've run the LiveOptics analytics and we dont push a lot of data around (small community college).I want to get the best performance out of what I have currently,...
View ArticleRe: MSA 2052 Auto-Tiering vs ReadCache on both controllers
It purely depends upon your business requirement.If you look for read performance only then you can go for 1 SSD read-cache in each Pool but if you look for read/write performance then you should go...
View ArticleRe: MSA 2040: Change the https certificate
Could you please advise from where I can get cert and key-files?We have a local CA in my domain and need to create customized certificate.
View ArticleMSA 2040 read-cache
Hello, I need to remove the read-cache from a running disk group. Is there any problem?
View ArticleRe: MSA 2040 read-cache
No problem. Read cache tiers can be added and removed from Pools without issue (except for the potential performance change caused by adding/removing). You might want to consider making sure your...
View ArticleRe: MSA 2040: Change the https certificate
Hello Emad,You will have to work with you CA to create the customer certificates that will be specific to your domain. HPE cannot provide you those custom certificates.Please refer to the SMU Guide for...
View ArticleMSA 2052 - High write response times in Host Port performance
We're in the process of proving out our new MSA 2052 and I noticed in the "Performance" tab on the left that the host port performance is showing rather high (for storage) latencies of up to 25ms under...
View ArticleRe: MSA 2052 - High write response times in Host Port performance
I was just reminded to look at the best practices guide by HPE support, this is what they directed me to: To optimize workloads, sequential writes are initially written to the fastest spinning drive...
View ArticleRe: MSA 2052 - High write response times in Host Port performance
Correct, no way to override that behavior (AFAIK).Your options would be:1) Separate SSD in one pool and archive in another pool2) Add a higher performance set of spinning drives as a "standard" tierIs...
View ArticleRe: MSA 2052 - High write response times in Host Port performance
I could move the VMs to the same pool and use one as a test, but it would take a while. There's ~20 VMs on each pool atm. I can't actually see any sort of latency in any of the VMs in regards to...
View ArticleRe: MSA 2052 - High write response times in Host Port performance
Interesting. You may want to consider creating a support case and uploading your logs for analysis. Have these exact hosts shown good consistent performance on other arrays in the past or is it a new...
View ArticleRe: MSA 2052 - High write response times in Host Port performance
I had actually opened a support case with HPE and they looked over my logs and saw no issues. It's just very strange. When I run disk benchmark tools on the VMs everything comes back great and the...
View ArticleRe: What is the compaction ratio in hp msa 2050 ?
Hello ,Below are the few points which can be helpful to answer your query:The compaction technology used in the MSA2050 is called thin provisioning.There is no specific ratio, Thin Provisioning is a...
View ArticleHelp Troubleshooting MSA2024 / MSA2324fc
We moved our office the week before last and when everyting was put back together I notices that on controller B there was a flashing amber light. I check the management interface and it was reporitng...
View ArticleRe: Help Troubleshooting MSA2024 / MSA2324fc
There is no issue with the Compact Flash card of the new Controller B. It just that Controller B functional status is down and that's why Compact Flash card shows as Not Installed.There are few...
View ArticleRe: Help Troubleshooting MSA2024 / MSA2324fc
The Compaq Flash only holds unwriten Disk Data on (Power) Failure.Not the OS.
View ArticleRe: MAS P2000 SAS and VMWare 5.5 - insufficient space in datastore
So this was a strange one and took a fair amount of time to daignose but it appears there was never an issue with VMware thin provisioning but an 'invisible' fault on the array. Controller B seems to...
View Article4KB boundaries and proper block size for SSDs
When reviewing the MSA 2050 SMU reference guide I noticed this tidbit in relation to SSDs and write amplification. It states thatData that is written in sequential LBAs that are aligned on 4KB...
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