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Last modified by Drunk Monkey on 2024-09-01 09:30
From version 2.1
edited by Drunk Monkey
on 2024-09-01 09:29
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To version 3.1
edited by Drunk Monkey
on 2024-09-01 09:30
Change comment: There is no comment for this version

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67 67   logs
68 68   mirror-1 ONLINE 0 0 0
69 69   ata-OCZ-REVODRIVE_OCZ-69ZO5475MT43KNTU-part1 ONLINE 0 0 0
70 - ata-OCZ-REVODRIVE_OCZ-9724MG8BII8G3255-part1 ONLINE 0 0 0{{/code}}
70 + ata-OCZ-REVODRIVE_OCZ-9724MG8BII8G3255-part1 ONLINE 0 0 0
71 +{{/code}}
71 71  
72 72  == SLOG Life Expectancy ==
73 73  
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100 100   mirror 1.46M 3.72G 20 0 285K 0
101 101   ata-OCZ-REVODRIVE_OCZ-69ZO5475MT43KNTU-part1 - - 20 0 285K 0
102 102   ata-OCZ-REVODRIVE_OCZ-9724MG8BII8G3255-part1 - - 20 0 285K 0
103 ------------------------------------------------- ----- ----- ----- ----- ----- -----{{/code}}
104 +------------------------------------------------ ----- ----- ----- ----- ----- -----
105 +{{/code}}
104 104  
105 105  == Conclusion ==
106 106  
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107 107  A fast SLOG can provide amazing benefits for applications that need lower latencies on synchronous transactions. This works well for database servers or other applications that are more time sensitive. However, there is increased cost for adding a SLOG to your pool. The battery-backed DRAM chips are very, very expensive. Usually on the order of $2,500 per 8 GB of DDR3 DIMMs, where a 40 GB MLC SSD can cost you only $100, and a 600 GB 15k SAS drive is $200. Again though, capacity really isn't an issue, while performance is. I would go for faster IOPS on the SSD, and a smaller capacity. Unless you want to partition it, and share the L2ARC on the same drive, which is a great idea, and something I'll cover in the next post.
108 108  
109 109  ----
112 +
110 110  (% style="text-align: center;" %)
111 111  Posted by Aaron Toponce on Thursday, December 6, 2012, at 6:00 am.
112 112  Filed under [[Debian>>url:https://web.archive.org/web/20210430212906/https://pthree.org/category/debian/]], [[Linux>>url:https://web.archive.org/web/20210430212906/https://pthree.org/category/linux/]], [[Ubuntu>>url:https://web.archive.org/web/20210430212906/https://pthree.org/category/ubuntu/]], [[ZFS>>url:https://web.archive.org/web/20210430212906/https://pthree.org/category/zfs/]].
... ... @@ -113,8 +113,9 @@
113 113  Follow any responses to this post with its [[comments RSS>>url:https://web.archive.org/web/20210430212906/https://pthree.org/2012/12/06/zfs-administration-part-iii-the-zfs-intent-log/feed/]] feed.
114 114  You can [[post a comment>>url:https://web.archive.org/web/20210430212906/https://pthree.org/2012/12/06/zfs-administration-part-iii-the-zfs-intent-log/#respond]] or [[trackback>>url:https://web.archive.org/web/20210430212906/https://pthree.org/2012/12/06/zfs-administration-part-iii-the-zfs-intent-log/trackback/]] from your blog.
115 115  For IM, Email or Microblogs, here is the [[Shortlink>>url:https://web.archive.org/web/20210430212906/https://pthree.org/?p=2592]].
119 +
116 116  ----
117 117  
118 118  {{box title="**Archived From:**"}}
119 -[[https:~~/~~/web.archive.org/web/20210430213532/https:~~/~~/pthree.org/2012/12/04/zfs-administration-part-i-vdevs/>>https://web.archive.org/web/20210430213532/https://pthree.org/2012/12/04/zfs-administration-part-i-vdevs/]]
123 +[[https:~~/~~/web.archive.org/web/20210430212906/https:~~/~~/pthree.org/2012/12/06/zfs-administration-part-iii-the-zfs-intent-log/>>https://web.archive.org/web/20210430212906/https://pthree.org/2012/12/06/zfs-administration-part-iii-the-zfs-intent-log/]]
120 120  {{/box}}