ssd
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From: Vahis on 16 Feb 2010 10:06 On 2010-02-16, JT <reply_only_to(a)newsgroup.nl> wrote: > On 16/02/10 09:57, houghi wrote: > Correct me if I'm wrong (as if you wouldn't if I were ....) but wasn't > there also an issue with multiple writes to ssd? > > So using it for database-like files or for swapspace (both with > multitudes of small-writes) seemed not a good idea. > One thing seems to be forgotten in this thread. As we speak of SSD drives we need to acknowledge that there are MLC and SLC types of these drives. One can't talk about SSD drives in general. As I mentioned earlier, I'm looking into SLC type of a drive as a system drive. The best of them give warranties for write endurance of 20 years(a)1TB write/erase per day for 128 GB disks. 10 years(a)1TB write/erase per day for 64 GB drives 5 years(a)1TB write/erase per day for 32 GB drives. MLC drives are another story. They are "consumer stuff" for lap tops. Where an MLC drive costs tens, the SLC ones cost hundreds of Euros. It's kinda sad that the MLC drives, as they have become to consumer price levels, have caused people to say general things about SSD drives without knowing better. Also the manufacturers are doing a bad job there. I've been investigating these drives in order to purchase one in the next couple of months. It's difficult to find and compare them because thair types are well hidden in the marketing material. I seem to have generated a rule of thumb as for drives of 32-64 GB: 1. If the price is tens or maybe a hundred, it's MLC, forget it. 2. If it's several hundreds, it may well be SLC, see in more detail. Ttry to wait, the price may (or may not) come a bit down before next summer, that's when it will be needed. Anyways, my next system drive will be SLC type SSD and storage drives will all be LP or "green" type. Vahis -- "Sunrise 7:59am (EET), sunset 5:11pm (EET) at Espoo, FI (9:11 hours daylight)" http://waxborg.servepics.com Linux 2.6.25.20-0.5-default #1 SMP 2009-08-14 01:48:11 +0200 x86_64 4:46pm up 108 days 21:47, 12 users, load average: 0.10, 0.18, 0.17
From: Vahis on 16 Feb 2010 12:35 On 2010-02-16, JT <reply_only_to(a)newsgroup.nl> wrote: > On 16/02/10 16:06, Vahis wrote: >> On 2010-02-16, JT <reply_only_to(a)newsgroup.nl> wrote: >> >>> On 16/02/10 09:57, houghi wrote: >>> >> >> >>> Correct me if I'm wrong (as if you wouldn't if I were ....) but wasn't >>> there also an issue with multiple writes to ssd? >>> >>> So using it for database-like files or for swapspace (both with >>> multitudes of small-writes) seemed not a good idea. >>> >>> >> > Quoting might suggest otherwise, but this was my text..... No problem, > but for the record >> One thing seems to be forgotten in this thread. >> As we speak of SSD drives we need to acknowledge that there are MLC and >> SLC types of these drives. >> >> One can't talk about SSD drives in general. >> > As I stated: Please correct me if I'm wrong. Thanks for doing just that. > So do I understand correctly that SLC's might be an option for > production systems - even with high write-I/O-rates? Yes. SLC type SSD disks. Definitely. Vahis -- "Sunrise 7:59am (EET), sunset 5:11pm (EET) at Espoo, FI (9:11 hours daylight)" http://waxborg.servepics.com Linux 2.6.25.20-0.5-default #1 SMP 2009-08-14 01:48:11 +0200 x86_64 7:32pm up 109 days 0:33, 13 users, load average: 0.14, 0.29, 0.33
From: J G Miller on 17 Feb 2010 11:21 On Wed, 17 Feb 2010 09:38:42 +0100, houghi wrote: > I have learned that the incorrect wording is less important then to > understand what they mean. ... > After a while these words will become the new meaning. Language is not > static. That does not appear to be your approach when a poster types SUSE, or OPENsuse, or OpenSusE or whatever.
From: Shmuel Metz on 17 Feb 2010 07:48 In <slrnhnnaoi.b20.houghi(a)penne.houghi>, on 02/17/2010 at 09:38 AM, houghi <houghi(a)houghi.org.invalid> said: >Also location is important. What is called left wing in the US is stil >right wing in Europe. Please excuse the flashback to 1964: They cut off the left wing of the American Eagle and now it only flies in circles. I would have said that we have no left wing anymore. There are two political parties that have locked out prospective competitors, and both are owned by the corporations. >For people who wonder who that is. It is Toy (sic) Blairs brother. >Eric wrote a manual for his brother to use in politics. Cold, very cold. But I thought that EB wrote the manual for GWB. -- Shmuel (Seymour J.) Metz, SysProg and JOAT <http://patriot.net/~shmuel> Unsolicited bulk E-mail subject to legal action. I reserve the right to publicly post or ridicule any abusive E-mail. Reply to domain Patriot dot net user shmuel+news to contact me. Do not reply to spamtrap(a)library.lspace.org
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