06-10-2011 05:50 AM
Alo if we have a storage 3PAR F-class, is there any technical upgrade metjod to T-class to increase cache?
06-10-2011 10:24 PM
For 3PAR, I think F and T are different arrays and upgrade may not be possibel from F to T. I am not very sure and lets see if any help on this!!!
06-12-2011 01:23 AM
do you need data or control cache?
Depending on you need you can buy one or more of the following parts:
HP 3PAR 4 GB (2 x 2-GB DIMMs) F-Class Control Cache QL232B
HP 3PAR 6 GB (3 x 2-GB DIMMs) F-Class Data Cache QL231B
HP 3PAR Upgrade 4 GB (2 x 2-GB DIMMs) F-Class Control Cache QL330B
HP 3PAR Upgrade 6 GB (3 x 2-GB DIMMs) F-Class Data Cache QL329B
06-12-2011 06:29 AM
06-12-2011 07:56 AM
an four noce F400 can hold up to 12 GB of control and 24 GB of data cache. So if 32 GB control and 96 GB data cache is a mandatory feature, then you have to go to an 8 node T800.
I don't think that you can compare a 3PAR T800 and an Eternus DX400. The latter is a dual (active/ active) storage. From a technical point of view I would prefer the T800. Much better system.
06-12-2011 12:52 PM
I know very well that we can't compare T800 with DX440S2, because T800 is dual active/active array that's why it is clasified as high-end storage rather than DX440 which is in mid-range arrays. But the problem here is concerning the pricing I'm trying to find a solution that gives customer now 32 GB cache then he can expand cache according to his needs to 96GB cache that's what given buy either DX440, so I'm trying to find a new "innovative" solution
09-08-2011 04:27 AM
3PAR F-class & T-class are similar. Each node (aka controller) has a dedicated Control Cache and a dedicated Data Cache.
From hardware side, cache are size fixed.
However from marketing side to compare between storage arrays, a lot of manufacturers shows a huge cache but really the cache is cutted in different functionnality.
For example: a F200 has two nodes, with 8GB Control Cache and 12GB Data Cache but from marketing side you can see 20GB Cache. with the same principle a T400 with 4 nodes has 64GB cache and a T800 with 8 nodes has 128GB Cache
Now, you have more with P10000 annoucement