Re: SSD performance

From: david(at)lang(dot)hm
To: Glyn Astill <glynastill(at)yahoo(dot)co(dot)uk>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: SSD performance
Date: 2009-01-23 12:39:07
Message-ID: alpine.DEB.1.10.0901230427580.12903@asgard.lang.hm
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

On Fri, 23 Jan 2009, Glyn Astill wrote:

>> I spotted a new interesting SSD review. it's a $379
>> 5.25" drive bay device that holds up to 8 DDR2 DIMMS
>> (up to 8G per DIMM) and appears to the system as a SATA
>> drive (or a pair of SATA drives that you can RAID-0 to get
>> past the 300MB/s SATA bottleneck)
>>
>
> Sounds very similar to the Gigabyte iRam drives of a few years ago
>
> http://en.wikipedia.org/wiki/I-RAM

similar concept, but there are some significant differences

the iRam was limited to 4G, used DDR ram, and used a PCI slot for power
(which can be in
short supply nowdays)

this new drive can go to 64G, uses DDR2 ram (cheaper than DDR nowdays),
gets powered like a normal SATA drive, can use two SATA channels (to be
able to get past the throughput limits of a single SATA interface), and
has a CF card slot to backup the data to if the system powers down.

plus the performance appears to be significantly better (even without
using the second SATA interface)

David Lang

In response to

Browse pgsql-performance by date

  From Date Subject
Next Message david 2009-01-23 12:52:27 Re: SSD performance
Previous Message Luke Lonergan 2009-01-23 11:53:24 Re: SSD performance