And that is where the 60 device limit starts to become an issue for users with large Oracle databases that they want to virtualize on vSphere. For customers like them, there are several options, none of which I would consider ideal: Re-architect their Oracle environment to use smaller databases across a larger number of VMs.
While there are certainly benefits to going this route. This is not a great option for customers who may already have standardized on ASM. Run Oracle with ASM on physical servers so they can leverage more than 60 devices per server. EMC vSpecialist, Larry Grant, worked at Oracle in a former life and has a blog post that lays out the reasons why it is better for customers to run Oracle on a Vblock instead of on Exadata.
Like this: Like Loading Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.
Email required Address never made public. What is a SCSI cable used for? In a typical example, a socket on a computer motherboard would have one end of a cable plugged into it, while the other end of the cable plugged into a disk drive or other device. Chadli Aristin Explainer. Why was the 25 pin SCSI connector developed? The 25 - pin SCSI connector was developed in an effort to make the connector smaller.
The problem with its use is that it too closely resembles the 25 - pin serial connector. Atilio Linnenberg Explainer. What is parallel SCSI converter? Mohcin Levenson Pundit. Is SCSI parallel or serial? SCSI is available in a variety of interfaces.
Eliot Bestfleisch Pundit. Which port allows data transmission in a daisy chain upto 7 devices at a very high speed? Nedka Van Leeuwen Pundit. Aissata Haberzett Pundit. Briam Timmermann Pundit.
What is the maximum allowable number of devices that can be attached to a parallel SCSI bus? On the SCSI buses, we had different sizes.
We had a narrow bus SCSI. Some SCSI was a wide bus. The narrow bus could plug in eight devices that we could string onto an individual controller. The wide bus allowed us to have 16 different devices on a single controller.
The part of SCSI that really makes it powerful is that the interface and the communication itself is very, very intelligent. We were able to do a lot of different communication over that SCSI bus.
And it was very simple to plug in. Even though we were able to control so many diverse kinds of devices, it was a single type of interface. SCSI has been around for a very, very long time. But even today, especially in large server farms, we see SCSI interfaces for hard drive controllers.
And especially on virtualized environments, we see a lot of SCSI being used. You could plug many devices in. But the last device had to have what we called a terminator on the end of the chain. That way, the SCSI communication knew exactly where the signal ended. Without a terminator, none of these devices would be able to operate properly. The newer SCSI devices tend to have these terminators built into the device. And you can enable or disable the terminator just by clicking a button.
Creating a quiesced snapshot of a Windows virtual machine fails with the error: Snapshot 0 failed: Failed to quiesce the virtual machine. This issue occurs if the virtual machine has more than seven disks attached to a single controller.
Note : Use this method if there is limited storage space or limited authority to create new disks. The Odd Angry Shot. Home Posts About. Light Dark Automatic.
0コメント