Striping disks

[Pat Coleman]

Sun has a product called ODS (I think). It will stripe your data
across different disks for better performance. Does anyone use this
product and if so is it worth getting? How much (%) of an increase
in performance can it give? I am thinking of using it on a SPARC 20
Model 612. Sun has told me that the second processor will handle the
i/o automatically so would this product help much?

Also does anyone know anything about the SPARC 20 Model HS11 (100MHz
HyperSparc) that is coming out soon?(When)

Pat.

[Casper H.S. Dik]

pcol...@xenolith.gsfc.nasa.gov (Pat Coleman) writes:

>Sun has a product called ODS (I think). It will stripe your data
>across different disks for better performance. Does anyone use this
>product and if so is it worth getting? How much (%) of an increase
>in performance can it give? I am thinking of using it on a SPARC 20
>Model 612. Sun has told me that the second processor will handle the
>i/o automatically so would this product help much?

Striping will help I/O, but how much largely depend on what you're doing.

>Also does anyone know anything about the SPARC 20 Model HS11 (100MHz
>HyperSparc) that is coming out soon?(When)

December (quoting sun-flash):

[ ... ]

SMCC's SPARCstation 20 Model HS11 uses the new 100 MHz
hyperSPARC(TM) processor from ROSS Technology, Inc. It is supported by
the Solaris(TM) 2.4 software environment and by a new release of the
Solaris 1 software environment, called Solaris 1.1.2. The new
SPARCstation 20 Model HS11 joins SMCC's highly successful SPARCstation
20 Model 61 at the high end of SMCC's SPARCstation 20 family. The new
SPARCstation 20 Model HS11 is rated at 104.5 SPECint92 and 127.6
SPECfp92.

[ ... ]

The SPARCstation 20 Model HS11 is available in a base
configuration with 32 megabytes of memory, 1 gigabyte of mass storage,
and a 17-inch TurboGX(TM) color monitor. It will be available
December, 1994.

Solaris 1.1.2 is available now for the United States. A
European (French, German, Italian and Swedish) version will be
available in December. Versions for Japan, Korea, PRC and Taiwan will
be available in January.

[ ... ]

Casper

[Henry Newman]

In article 4...@paperboy.gsfc.nasa.gov, pcol...@xenolith.gsfc.nasa.gov (Pat Coleman) writes:
>Sun has a product called ODS (I think). It will stripe your data
>across different disks for better performance. Does anyone use this
>product and if so is it worth getting?

Have you determined that that system is I/O bound at the disk drive?

> How much (%) of an increase in performance can it give?

Performance increase could only be estimated after you determine if
the device(s) are having performance problems.

> I am thinking of using it on a SPARC 20
>Model 612. Sun has told me that the second processor will handle the
>i/o automatically so would this product help much?
>

More data is needed before someone can make reasonable estimates.

---
Henry Newman
Performance Analyst

Performance and Accounting Tools Voice (612)-920-6188
Instrumental Inc. Fax 612-920-7069
4500 Park Glen Rd. Suite 390 Internet: h...@instrumental.com
Minneapolis, Mn. 55416 http://www.instrumental.com