Re: [GENERAL] Considering Solid State Drives

2010-11-15 Thread Greg Smith
Allan Kamau wrote: I am now thinking of investing in a SSD (Solid State Drive), and maybe choosing between Crucial Technology 256GB Crucial M225 Series 2.5-Inch Solid State Drive (CT256M225) and Intel X25-M G2 (160GB) - Intel MLC. Both of these are worthless for database applications if you

Re: [GENERAL] Considering Solid State Drives

2010-11-12 Thread Allan Kamau
On Thu, Nov 11, 2010 at 4:35 PM, Vick Khera vi...@khera.org wrote: On Thu, Nov 11, 2010 at 1:42 AM, Allan Kamau kamaual...@gmail.com wrote: After googling I found little resent content (including survival statistics) of using SSDs in a write intensive database environment. We use the Texas

Re: [GENERAL] Considering Solid State Drives

2010-11-11 Thread Marc Mamin
Postgres General Subject: [GENERAL] Considering Solid State Drives Hi, As part of datamining activity. I have some plpgsql functions (executed in parallel, up to 6 such concurrent calls) that perform some reads and writes of large number of (maybe 1) records at a time to a table having multi

Re: [GENERAL] Considering Solid State Drives

2010-11-11 Thread Vick Khera
On Thu, Nov 11, 2010 at 1:42 AM, Allan Kamau kamaual...@gmail.com wrote: After googling I found little resent content (including survival statistics) of using SSDs in a write intensive database environment. We use the Texas Memory RAMSan-620 external disk units. It is designed specifically to

Re: [GENERAL] Considering Solid State Drives

2010-11-11 Thread Radosław Smogura
Hello, When choosing SSD drive you need to consider * number of writes to particular sector which is about 100k to 200k and then sector will fail * in case of DB grow, limitied size of those dirvers. As part of datamining activity. I have some plpgsql functions (executed in parallel, up to 6

Re: [GENERAL] Considering Solid State Drives

2010-11-11 Thread David Siebert
ZFS has an option to use an SSD as cache for the spinning drives. ZFS under Solaris has turned in some really good IO numbers. The problem is with the new Sun I am not feeling so good about the open nature of Solaris. ZFS performance under BSD I have read does not match ZFS under Solaris. On

Re: [GENERAL] Considering Solid State Drives

2010-11-11 Thread Joachim Worringen
Am 11.11.2010 16:40, schrieb David Siebert: ZFS has an option to use an SSD as cache for the spinning drives. ZFS under Solaris has turned in some really good IO numbers. The problem is with the new Sun I am not feeling so good about the open nature of Solaris. ZFS performance under BSD I have

Re: [GENERAL] Considering Solid State Drives

2010-11-11 Thread mark
:42 PM To: Postgres General Postgres General Subject: [GENERAL] Considering Solid State Drives Hi, As part of datamining activity. I have some plpgsql functions (executed in parallel, up to 6 such concurrent calls) that perform some reads and writes of large number of (maybe 1) records

[GENERAL] Considering Solid State Drives

2010-11-10 Thread Allan Kamau
Hi, As part of datamining activity. I have some plpgsql functions (executed in parallel, up to 6 such concurrent calls) that perform some reads and writes of large number of (maybe 1) records at a time to a table having multi-column primary key. It seems the writing of these few thousands