Roshan Perera writes:
> Hi all,
>
> I am after some help/feedback to the subject issue explained below.
>
> We are in the process of migrating a big DB2 database from a
>
> 6900 24 x 200MHz CPU's with Veritas FS 8TB of storage Solaris 8 to
> 25K 12 CPU dual core x 1800Mhz with ZFS 8TB s
han Perera
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] ZFS - DB2 Performance
Possibly the storage is flushing the write caches when it
should not. Until we get a fix, cache flushing could be
disabled in the storage (ask the vendor for the magic
incantation). If
Possibly the storage is flushing the write caches when it
should not. Until we get a fix, cache flushing could be
disabled in the storage (ask the vendor for the magic
incantation). If that's not forthcoming and if all pools are
attached to NVRAM protected devices; then these /etc/
On Jun 26, 2007, at 4:26 AM, Roshan Perera wrote:
Hi all,
I am after some help/feedback to the subject issue explained below.
We are in the process of migrating a big DB2 database from a
6900 24 x 200MHz CPU's with Veritas FS 8TB of storage Solaris 8 to
25K 12 CPU dual core x 1800Mhz with
]
- Original Message -
From: Will Murnane <[EMAIL PROTECTED]>
Date: Tuesday, June 26, 2007 2:00 pm
Subject: Re: [zfs-discuss] ZFS - DB2 Performance
To: Roshan Perera <[EMAIL PROTECTED]>
Cc: zfs-discuss@opensolaris.org
> On 6/26/07, Roshan Perera <[EMAIL PROTECTED]> wr
On 6/26/07, Roshan Perera <[EMAIL PROTECTED]> wrote:
25K 12 CPU dual core x 1800Mhz with ZFS 8TB storage SAN storage (compressed &
RaidZ) Solaris 10.
RaidZ is a poor choice for database apps in my opinion; due to the way
it handles checksums on raidz stripes, it must read every disk in
order
Hi all,
I am after some help/feedback to the subject issue explained below.
We are in the process of migrating a big DB2 database from a
6900 24 x 200MHz CPU's with Veritas FS 8TB of storage Solaris 8 to
25K 12 CPU dual core x 1800Mhz with ZFS 8TB storage SAN storage (compressed &
RaidZ) So
