Add read cache - Revision history

Pa-P at 12:30, 22 September 2020

2020-09-22T12:30:29Z

← Older revision		Revision as of 12:30, 22 September 2020
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	'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using ~~Genesis~~ ZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.		'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using ZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.

	[[Category:Help topics]]		[[Category:Help topics]]

Ma-W at 11:25, 8 September 2020

2020-09-08T11:25:10Z

← Older revision		Revision as of 11:25, 8 September 2020
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	'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using ~~GenesisZX~~ console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.		'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using Genesis ZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.

	[[Category:Help topics]]		[[Category:Help topics]]

Ma-W at 12:20, 15 March 2019

2019-03-15T12:20:39Z

← Older revision		Revision as of 12:20, 15 March 2019
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	~~<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px">~~'''Read Cache'''~~ ~~A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using GenesisZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.~~</span>~~		'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using GenesisZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.

			[[Category:Help topics]]

migrate>Mi-S at 13:34, 30 June 2017

2017-06-30T13:34:28Z

← Older revision		Revision as of 13:34, 30 June 2017
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	<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px">'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool drives used for read-cache will not listed as available devices untill removing ZFS data structure from them using GenesisZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.~~<br/>~~</span>		<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px">'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool, drives used for read-cache will not listed as available devices, untill removing ZFS data structure from them using GenesisZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.</span>

migrate>Mi-S at 12:34, 30 June 2017

2017-06-30T12:34:56Z

← Older revision		Revision as of 12:34, 30 June 2017
Line 1:		Line 1:
	<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px;">'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.</span>		<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px">'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.<br/><br/>If Pool with read-cache devices will be deleted or read-cache devices will be deleted from the Pool drives used for read-cache will not listed as available devices untill removing ZFS data structure from them using GenesisZX console tool (CTRL + ALT + X - Remove ZFS data structure).<br/>USE IT CAREFULLY. YOU MUST BE SURE THAT YOU SELECT CORRECT DRIVES.<br/></span>

migrate>Ad-B: Created page with "'''Read Cache''' A device used to cache..."

2014-06-16T13:17:54Z

Created page with "<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px;">'''Read Cache''' A device used to cache..."

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<span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: small; line-height: 19.200000762939453px;">'''Read Cache''' A device used to cache storage pool data. A cache device cannot be configured as a mirror or raidz group.These devices provide an additional layer of caching between main memory and disk. For read-heavy workload,where the working set size is much larger than what can be cached in main memory, using cache devices allow much more of this working set to be served from low latency media. Using cache devices provides the greatest performance improvement for random read-workloads of mostly static content.</span>