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15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

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Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#11

I am going for the 15tb instead of that 14 so I have extra space for backups. Says no body. We are clearly close to the end of spinning rust, absent some new breakthrough.

>We are clearly close to the end of spinning rust

In every aspect, except price.

Samsung 1 TB SSD for 150€, Seagate 8 TB for 220€.

Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#12
post #7

I am going for the 15tb instead of that 14 so I have extra space for backups. Says no body. We are clearly close to the end of spinning rust, absent some new breakthrough.

If I can choose between stuffing 6x15TB or 6x14TB at comparable cost into my NAS, I'd buy the 6x15TB ones.

Be aware this is an SMR drive, so your writes are going to be heavily limited.

Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#13
post #2

It's an SMR drive. So better for archiving than regular IO

Copy on write filesystems can probably be optimized for SMR by using TRIM commands to punch holes and rewrite the content sequentially in a new zone. Afaik both zfs and btrfs have plans to do this.

That way they can be useful for more than archival.

Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#14
post #7

Earlier quoted context omitted.

If I can choose between stuffing 6x15TB or 6x14TB at comparable cost into my NAS, I'd buy the 6x15TB ones.

Be aware this is an SMR drive, so your writes are going to be heavily limited.

SMR is fine for sequential loads, and anything else is not what these are for.

Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#16
post #11

I am going for the 15tb instead of that 14 so I have extra space for backups. Says no body. We are clearly close to the end of spinning rust, absent some new breakthrough.

>We are clearly close to the end of spinning rust In every aspect, except price. Samsung 1 TB SSD for 150€, Seagate 8 TB for 220€.

Agree. And for a NAS the performance of SSD are unlikely to be required.

In fact at one point I made the mistake of enabling SSD caching on a NAS. The SSD became the bottleneck because of the limitation of SATA, ie one SSD on SATA is slower than 8 or 10 HD in RAID5. So unless you really need very high iops, HD are likely to be good enough.

Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#17

Will we hit a point where the size of the drive is simply too big to get the data off in any decent amount of time?

I have a lot of places already where recovering from a full wipe is almost not worth it. Customers with 100's of TB of data in 'prosumer' NAS devices that are chock full of regular drives.

Re: 15TB HDDs: Western Digital Unveils the Ultrastar DC HC620

#19
post #11

I am going for the 15tb instead of that 14 so I have extra space for backups. Says no body. We are clearly close to the end of spinning rust, absent some new breakthrough.

>We are clearly close to the end of spinning rust In every aspect, except price. Samsung 1 TB SSD for 150€, Seagate 8 TB for 220€.

1tb Samsung 860 Evo is more than 850€ in my country...
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