M Mainframe Discussion List On Behalf
>> Of John McKown
>> Sent: Tuesday, June 11, 2019 8:06 AM
>> To: IBM-MAIN@LISTSERV.UA.EDU
>> Subject: [External] Re: Hybrid SMS Storage Group - Database
>>
>> On Tue, Jun 11, 2019 at 7:40 AM Mike Schwab
>> wrote:
>&
oing things "properly". Again, many years
ago at a company that basically no longer exists.
>
> Rex
>
> -Original Message-
> From: IBM Mainframe Discussion List On Behalf
> Of John McKown
> Sent: Tuesday, June 11, 2019 8:06 AM
> To: IBM-MAIN@LISTSERV.UA.E
Mainframe Discussion List On Behalf Of
John McKown
Sent: Tuesday, June 11, 2019 8:06 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [External] Re: Hybrid SMS Storage Group - Database
On Tue, Jun 11, 2019 at 7:40 AM Mike Schwab wrote:
> The problem with SSD storage is that the blocks in a matched
@LISTSERV.UA.EDU
Subject: [EXTERNAL] Hybrid SMS Storage Group - Database
Hi,
Is there a possibility of performance degradation if SSD storage is added to
SMS storage group that consists mainly of 15K SAS storage. Database tables are
written to the storage group.
We use a Dynamic Provisioning pool
On Tue, Jun 11, 2019 at 7:40 AM Mike Schwab wrote:
> The problem with SSD storage is that the blocks in a matched set of
> device start to fail at the same rate. Run long enough and you get
> enough bad blocks in all devices and they all fail at roughly the same
> time loosing the entire raid
ssion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Mike Schwab
Sent: Tuesday, June 11, 2019 8:40 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Hybrid SMS Storage Group - Database
The problem with SSD storage is that the blocks in a matched set of
device start to fail at the same rate. Run long enou
The problem with SSD storage is that the blocks in a matched set of
device start to fail at the same rate. Run long enough and you get
enough bad blocks in all devices and they all fail at roughly the same
time loosing the entire raid group, you don't have enough time between
failures to replace
Hi,
Is there a possibility of performance degradation if SSD storage is added to
SMS storage group that consists mainly of 15K SAS storage. Database tables are
written to the storage group.
We use a Dynamic Provisioning pool at disk subsystem level.
Regards
Nedbank Group Limited Internal
