Is SQLIO accurate when run inside a VM?
I'm wondering if there are issues with timing accuracy since there's no direct access to the system's hardware timer. Any thoughts?
View ArticleSVMotion Failing
I am trying to svmotion just one disk and am getting "A general system error occurred: Failed to start disk migrations." It's not for all VM's though. Any thoughts on why this would be?
View ArticleRe: SVMotion Failing
Try follow this procedure: To reset the Migrate.Enabled setting:Connect vSphere or VMware Infrastructure Client to your vCenter Server. Click on the ESX host.Click the Configuration tab.Click Advanced...
View ArticleRe: Is SQLIO accurate when run inside a VM?
Nope - the response time is still accurate, because its what the guest sees.
View ArticleRe: Sharing secondary disk between Linux and Windows Guests
NTFS is not a clusterable filesystem, so you can't do this without a ton of disk corruption.
View ArticleRe: Fast VP + Vmware
King_Julien wrote: As far as I know I have to move a VM to a LUN on the FAST VP pool, then FAST VP will what? Then nothing...the FAST will take care of the rest. Will take a "slice" (a block if get it...
View ArticleRe: Several important questions regarding SIOC / Storage IO Control
1) Its well designed and supported for this use case. 2) Its per-VM queue not per host queue 3) Its not supported, and its really not a good idea. Why would you want to do this?
View ArticleRe: Sharing secondary disk between Linux and Windows Guests
From what i have read this is possible in some instances, like clustering Windows Server.Windows uses a shared-nothing cluster, where only a single node has access to the shared disk at the same time....
View ArticleRe: Several important questions regarding SIOC / Storage IO Control
Hmm, regarding to answer 2) Isn't it based on the LUN queue/datastore? RegardsPatrick
View ArticleRe: Several important questions regarding SIOC / Storage IO Control
vPatrickS wrote: Hmm, regarding to answer 2) Isn't it based on the LUN queue/datastore? RegardsPatrickIt actually is "datastore wide scheduling", meaning across multiple hosts.
View ArticleNoisy neighbor with RDMs
We've got SQL server VM which puts a huge load on storage: 1,5k average commands per second, with 3,5k spikes (as reported by vCenter). It negatively impacts all datastores latency as a result. We are...
View ArticleRe: ESXi 5.x "I/O Error Occurred"
Do you think this is the same or related to my issue?http://communities.vmware.com/thread/445894
View ArticleRe: Noisy neighbor with RDMs
This is a case where dedicated resources for the VM (spindles, ports, etc) is helpful. Or, certain arrays (most EMC, some others - I just know EMC best) can set QoS for given hosts/LUNs to prevent...
View ArticleFully connecting directly attached datastores in an ESXi cluster?
I have deployed two identical ESXi 5.1 hosts (Dell PowerEdge r720xd servers) each possessing 5.46 TB of direct-attached storage. They are both currently registered to our vCenter 5.1 Server and...
View ArticleRe: Noisy neighbor with RDMs
It's NetApp FAS3140. The controller has many other LUNs configured and blocks/sec figure is generally in between 6-9k. MB/s rate for this VM is about 50-90MB/s. Typical FC disk equals to roughly...
View ArticleRe: Noisy neighbor with RDMs
However, given the fact that it's an important SQL server we will consider relocating it to another or separate aggregate.
View ArticleNew Storage
Hi, we are changing our storage to a new NetApp. We are now creating our storage design and i wan´t to know if someone could share his experience with the different capabilities to configure the...
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