Veritas-bu

[Veritas-bu] LTO3 Drive Speed Poll

2006-07-11 18:07:52
Subject: [Veritas-bu] LTO3 Drive Speed Poll
From: jpiszcz at lucidpixels.com (Justin Piszcz)
Date: Tue, 11 Jul 2006 18:07:52 -0400 (EDT)
This is on an HP shelf connected via

06:01.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X 
Fusion-MPT Dual Ultra320 SCSI (rev 07)
06:01.1 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X 
Fusion-MPT Dual Ultra320 SCSI (rev 07)

Using 10k RPM drives I believe.


On Tue, 11 Jul 2006, Steve Quan wrote:

> Hi Justin,
>
> Is this on a SAN ?
>
> /Steve
> ---
> On Tue, 11 Jul 2006, Justin Piszcz wrote:
>
>> The group I work with is expecting 160-200MB/s megabytes per second on an
>> LTO3 with compression.  I did some tests today with 7 RAID1 SCSI drives.
>>
>> 67GB x 7
>>
>> On each volume was 3 20GB tar files.
>> I got 78-82MB/s sustained total, 12-16MB/s on each thread (7
>> multistreamed).
>>
>> The tar files are representative of a typical file system in our
>> environments.
>>
>> What speeds have other members gotten when doing speed testing to LTO3
>> drives?
>>
>> Justin.
>>
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>