Re: 10g ASM Pros and Cons

On 2006-04-03, DA Morgan <damorgan_at_psoug.org> wrote:
> Laurenz Albe wrote:
>> Michael42 <melliott42_at_yahoo.com> wrote:
>>> If ASM is a trend of the future I'd like to understand what it's
>>> benefits are.
>>
>> It gives Oracle Corporation control over your storage system, which makes
>> them happy, so they promote it.
>>
>> Yours,
>> Laurenz Albe
>
> On the positive side:
>
> 1. It provides a single point of support so there is no finger-pointing.
> 2. It provides easy management of block devices (raw partitions).
> 3. It automatically moves hot blocks to the outside of the disk.
> 4. It is vendor and operating system neutral.
> 5. It, additionally, provides all of the features of an LVM.
> 6. It is included in your license so no additional cost for the software
> or its support.
>
> But does Oracle gain control over the storage system? I don't see how
> this is any different from letting any other vendor supply an LVM.

        That statement simply boggles the mind.

        The typical LVM doesn't cut you off from standard filesystem level tools like ASM does. The typical LVM doesn't attempt to replace the fileystem layer of an OS entirely. They just present a complex disk device to the system as a simple one.

        This makes your points 4 & 5 untrue in practice.

        ASM is basically a replacement for Oracle raw disks.

-- 
...as if the ability to run Cubase ever made or broke a platform.
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