What Are You Doing Right Now
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@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 You mean that the cache itself is striped across drives? Can be very dangerous, depending on the type of cache (read/write).
Let me fully explain how I'm viewing this so if I'm wrong about something you guys can correct me. The way I view SSD caching is similar to the way I view memory. It's like faster, more expensive temporary space. So You have 4 4TB hard drives in a raid 10. Can you use SSD caching to support that raid 10?
Sure, with a RAID implementation that can handle this, like ZFS (just for example). But be double sure about what you plan to do. When your write cache goes south due to a drive failure or a power outage, data will be lost.
Yeah but only active data. Not entire drives.
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@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 You mean that the cache itself is striped across drives? Can be very dangerous, depending on the type of cache (read/write).
Let me fully explain how I'm viewing this so if I'm wrong about something you guys can correct me. The way I view SSD caching is similar to the way I view memory. It's like faster, more expensive temporary space. So You have 4 4TB hard drives in a raid 10. Can you use SSD caching to support that raid 10?
Sure, with a RAID implementation that can handle this, like ZFS (just for example). But be double sure about what you plan to do. When your write cache goes south due to a drive failure or a power outage, data will be lost.
Yeah but only active data. Not entire drives.
Be not too sure about this. What if a file gets partly overwritten, but the remaining part is still in the cache? Or a half-committed transaction in a database?
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@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 You mean that the cache itself is striped across drives? Can be very dangerous, depending on the type of cache (read/write).
Let me fully explain how I'm viewing this so if I'm wrong about something you guys can correct me. The way I view SSD caching is similar to the way I view memory. It's like faster, more expensive temporary space. So You have 4 4TB hard drives in a raid 10. Can you use SSD caching to support that raid 10?
Sure, with a RAID implementation that can handle this, like ZFS (just for example). But be double sure about what you plan to do. When your write cache goes south due to a drive failure or a power outage, data will be lost.
Yeah but only active data. Not entire drives.
Be not too sure about this. What if a file gets partly overwritten, but the remaining part is still in the cache? Or a half-committed transaction in a database?
I'm considering this for media. So if I lose 25% it's still not a problem provided the raid is still functioning as intended. I just replace the media. No big deal.
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@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 You mean that the cache itself is striped across drives? Can be very dangerous, depending on the type of cache (read/write).
Let me fully explain how I'm viewing this so if I'm wrong about something you guys can correct me. The way I view SSD caching is similar to the way I view memory. It's like faster, more expensive temporary space. So You have 4 4TB hard drives in a raid 10. Can you use SSD caching to support that raid 10?
Sure, with a RAID implementation that can handle this, like ZFS (just for example). But be double sure about what you plan to do. When your write cache goes south due to a drive failure or a power outage, data will be lost.
Yeah but only active data. Not entire drives.
Be not too sure about this. What if a file gets partly overwritten, but the remaining part is still in the cache? Or a half-committed transaction in a database?
I'm considering this for media. So if I lose 25% it's still not a problem provided the raid is still functioning as intended.
What type of media? A cache won't give you much in case of large videos
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@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 said in What Are You Doing Right Now:
@thwr said in What Are You Doing Right Now:
@wirestyle22 You mean that the cache itself is striped across drives? Can be very dangerous, depending on the type of cache (read/write).
Let me fully explain how I'm viewing this so if I'm wrong about something you guys can correct me. The way I view SSD caching is similar to the way I view memory. It's like faster, more expensive temporary space. So You have 4 4TB hard drives in a raid 10. Can you use SSD caching to support that raid 10?
Sure, with a RAID implementation that can handle this, like ZFS (just for example). But be double sure about what you plan to do. When your write cache goes south due to a drive failure or a power outage, data will be lost.
Yeah but only active data. Not entire drives.
Be not too sure about this. What if a file gets partly overwritten, but the remaining part is still in the cache? Or a half-committed transaction in a database?
I'm considering this for media. So if I lose 25% it's still not a problem provided the raid is still functioning as intended. I just replace the media. No big deal.
Here's a quick overview, ZFS related: https://forums.freenas.org/index.php?threads/ssds-arc-and-zil.17191/
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@thwr cool. thanks
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@DustinB3403 said in What Are You Doing Right Now:
@dafyre said in What Are You Doing Right Now:
@JaredBusch : And nobody asked you the important question: Do you have a spare?
These can be picked up at best buy for $100, no real need to hold a spare....
True but when I want a spare I want one **right F!(#%@# now and $100 is no big deal to have it on hand.
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xferring my ueb backup vdis to new ubuntu storage server. 60-70MB/sec from iostat, hitting nearly 1750 iops(not all the time tho) according to XenCenter. Still going to take all afternoon and most of the night.
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Hanging with @scottalanmiller @JentuTechnologies @Minion-Queen -
Tried 1911 Raspberry on draft today. It was good.
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Working my way through Zed Shaw's "Learn C the Hard Way".
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@FrostyPhoenix said in What Are You Doing Right Now:
Hanging with @scottalanmiller @JentuTechnologies @Minion-QueenWe had lots of fun with you guys today! Thanks for making the 5+ hour drive to visit us, oh and for my MINION Tic Tac's!!
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Playing Warframe with @DustinB3403
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Just turned my gaming on for the first time in more then a month. On the third round of updates.
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@thanksajdotcom said in What Are You Doing Right Now:
Tried 1911 Raspberry on draft today. It was good.
It's that a pistol with a micro board on it?
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@coliver said in What Are You Doing Right Now:
@thanksajdotcom said in What Are You Doing Right Now:
Tried 1911 Raspberry on draft today. It was good.
It's that a pistol with a micro board on it?
I wish my 1911 was a smart 1911.
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I like the digital ocean ad. Hadn't seen that one before.
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@coliver said in What Are You Doing Right Now:
I like the digital ocean ad. Hadn't seen that one before.
Random, lol. It's been there for a few weeks now.
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Just set up my First Sip phone / Soft phone.
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@WrCombs said in What Are You Doing Right Now:
Just set up my First Sip phone / Soft phone.
Awesome. You can dial the internal conference bridge from there, too.
