Why we need our SAN RAID controllers to support logical drives
Not all SAN RAID controllers support the idea of logical disks, whereyou can make a bunch of drives into a storage pool and then carve thestorage pool up into software-managed bits; some prefer the simplerand more straightforward approach of just exporting the pool itselfand staying out of the space management business.
Unfortunately, we need logical drives. The problem (and the reason) isthat logical drives are the only way to sensibly dynamically split thespace on a RAID controller between multiple fileservers. This is becauselogical
RAID-5 versus RAID-6
For those who haven't encountered it yet, RAID-6 is RAID-5 with twoparity blocks per stripe instead of one; it thus has a two disk overheadfor parity, compared to RAID-5's one disk.
We're interested in RAID-6 because it is more or less a better versionof RAID-5 plus a hot spare. With RAID-5, if you lose a drive the diskarray is non-redundant for the time it takes to rebuild onto your hot
無悔
曲：盧冠廷 詞：唐書琛
旁人不許我寫詩句
旁人怪我太愛編夢
然而有你淺淺醉我夢裏
欣賞領略詩中的意思
旁人不許我說一句
旁人怪我愛說謊話
然而有你清楚我信任我
天天也讓我一講再講
若有天沒法再說再寫這段話
請把詩
20070604 推介網誌
Google Blogosoped / 谷歌治印
英： https://blog.outer-court.com/ 中： https://google.blogoscoped.cn/
Google 毫無疑問地改變了網絡世界，因此亦有很多專門 Blog 去留意 Google 的動向，其中一個是 Google Blogoscoped，裏面有「80% Google, 20% 其他」，內容包括 Google 新產品、教學、
鑑於流水（一）
（ 來。花朵。 ）
沒有叫人聲嘶力竭的口號﹔沒有大會的指定動作……
請來為十八年前無端斷送青春和性的人們，獻上我們最溫柔的悼念。
為紀念六四事件十八周年，我們僅呼籲各方友好，於六四當日前往位於尖沙咀文化中心外，
Weekly spam summary on June 2nd, 2007
This week, we:
- got 10,553 messages from 239 different IP addresses.
- handled 19,451 sessions from 1,629 different IP addresses.
- received 430,428 connections from at least 69,677 different IPaddresses.
- hit a highwater of 9 connections being checked at once.
The connection volume is way up compared to last week ; however, I believe that it is mostly becauseof one machine, 213.
陳綺貞花的姿態演唱會
看這dvd
無懈可撃的演出
陳綺貞迷必備
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在問題中發現城市
異議聲音。珍重。
異議聲音二零零 七 dizzidenza 2007
異議聲音二零零 七
請廣為轉傳發播
異議聲音 ( 天安門迴響 )
一九八九六四
想超越愛國
要真正民主
做人的運動
愛恨哀怨 迴響不絕
二零零 七 六四
要再上路
愛人同志
到廣場去
死生相隨
異議聲音為一個由九七