OnBoard Raid 1. Mirroring, no need for cache I thought, since what is
written on drive0 is also written on drive1 at about the same time.
Thought with advertised over one hundred years on mean failure time, better
don't end up with one drive failing beforethat :)

Been working for about a year, no complaint or problems.

----- Original Message -----
From: "Leyne, Sean" <Sean@...>
To: <firebird-support@yahoogroups.com>
Sent: Saturday, January 01, 2011 4:22 PM
Subject: RE: [firebird-support] SSD and "hotspots"?


> Hans,
>
>> Results for 2 Intel 160GB x25-m (G2) Sata SSD in Raid1 (Mirrored)
>
>> Sequential Read : 244.366 MB/s
>> Sequential Write : 86.516 MB/s
>> Random Read 512KB : 242.880 MB/s
>> Random Write 512KB : 87.942 MB/s
>> Random Read 4KB : 20.990 MB/s
>> Random Write 4KB : 41.334 MB/s
>
>> > The numbers for Crystal Disk Mark v2.2 (5 passes, 1000MB run length)
>> > are:
>
>> > Local SSD - Reads (MB/s)
>> > - Sequential = 269.6
>> > - 512K Random = 258.3
>> > - 4K Random = 28.69
>> >
>> > Local SSD - Writes (MB/s)
>> > - Sequential = 215.5
>> > - 512K Random = 211.9
>> > - 4K Random = 49.37
>
> I find it interesting that my single Crucial C300 256GB SSD consistently
> outperformed your RAID1 setup.
>
> Are you using an on-board RAID controller or a separate adapter? Does the
> controller have a cache w/battery backup?
>
>
> Sean
>
>
>
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