Hi Maren,
We use here MS Exchange with I-SCSI connection to our filers (fast FC-disks). Because we want a small and flexible DB, we use archiving software from KVS. With this software, we archive all our 'old' mails to a cheaper and little slower NearStore (R150 from NetApp with ATA-disk). This is transparent for our users. This work great and the users can use their email box as a real archive without quota troubles.
Best Regards,
Reinoud
UZLeuven Belgium
-----Oorspronkelijk bericht----- Van: Maren S. Leizaola [mailto:leizaola@hk.com] Verzonden: maandag 14 juni 2004 23:25 Aan: toasters@mathworks.com Onderwerp: Hirearchical Storage Management - Solid state & Hard disk(NAS/SAN)
Hi,
In a lot of the system I can think off a small portion of the data is accessed very frequently and a large percentage of the data is very rarely accessed. An example would be typical email store. Directories of the mail store are read very frequently however once an email is read and responded to they typically are infrequently read again.
Are there any systems out there that could would use Solid state disks as the active storage and then you could use something like a NAS or SAN to use as the "slow archive storage".
This would permit one to give a much higher performance with and serve more users and have cheaper and slower NAS/SAN backing the system.
Pardon my ignorance if what I am asking is common place out there but I've not seen this. Does what I am suggesting make sense?
Regards, Maren.
-------------------------------------------------------------- HKdotCOM Ltd AIM: MarenHKdotCOM Tel: 852 2865-4865 ext 888 leizaola@hk.com ICQ: 39905706 Fax: 852 2865-4100 -------------------------------------------------------------- Join our liquidations list : http://www.lists.hk.com/lists/listinfo/liquidations
On Tue, 15 Jun 2004, Reinoud Reynders wrote:
Hi Maren,
We use here MS Exchange with I-SCSI connection to our filers (fast FC-disks). Because we want a small and flexible DB, we use archiving software from KVS. With this software, we archive all our 'old' mails to a cheaper and little slower NearStore (R150 from NetApp with ATA-disk).
Yes, that is an interesting setup. Do I understand correctly that you have to go in and archive the data manually? What I am referring to is a system that dynamically knows what files are being read or written to.
I know this system would not work for all applications however I think where the data read every day is bigger than the Solid state disk. The ratio of the SSD size would have to be set based on how much data is being read or written per to disk every day.
This is transparent for our users. This work great and the users can use their email box as a real archive without quota troubles.
Precisely, it does not matter what you give to those users, specially if you have applications which are IO bound, you don't care if you give monster email quotas to your users. They are unlikely to be able to hammer the disk subsystem to a halt just because they keep 60,000 or 100,000 messages (mbox) in their in a single inbox and do no maintenance.
Regards, Maren.
Best Regards,
Reinoud
UZLeuven Belgium
-----Oorspronkelijk bericht----- Van: Maren S. Leizaola [mailto:leizaola@hk.com] Verzonden: maandag 14 juni 2004 23:25 Aan: toasters@mathworks.com Onderwerp: Hirearchical Storage Management - Solid state & Hard disk(NAS/SAN)
Hi,
In a lot of the system I can think off a small portion of the data is accessed very frequently and a large percentage of the data is very rarely accessed. An example would be typical email store. Directories of the mail store are read very frequently however once an email is read and responded to they typically are infrequently read again.
Are there any systems out there that could would use Solid state disks as the active storage and then you could use something like a NAS or SAN to use as the "slow archive storage".
This would permit one to give a much higher performance with and serve more users and have cheaper and slower NAS/SAN backing the system.
Pardon my ignorance if what I am asking is common place out there but I've not seen this. Does what I am suggesting make sense?
Regards, Maren.
HKdotCOM Ltd AIM: MarenHKdotCOM Tel: 852 2865-4865 ext 888 leizaola@hk.com ICQ: 39905706 Fax: 852 2865-4100
Join our liquidations list : http://www.lists.hk.com/lists/listinfo/liquidations
-------------------------------------------------------------- HKdotCOM Ltd AIM: MarenHKdotCOM Tel: 852 2865-4865 ext 888 leizaola@hk.com ICQ: 39905706 Fax: 852 2865-4100 -------------------------------------------------------------- Join our liquidations list : http://www.lists.hk.com/lists/listinfo/liquidations
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Maren S. Leizaola -
Reinoud Reynders